./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f8161fc7f730bddeac54a8f174c52e5ef9cd819e9497e3a4087e68b96d46105 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:11:49,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:11:49,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:11:49,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:11:49,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:11:49,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:11:49,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:11:49,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:11:49,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:11:49,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:11:49,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:11:49,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:11:49,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:11:49,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:11:49,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:11:49,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:11:49,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:11:49,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:11:49,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:11:49,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:11:49,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:11:49,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:11:49,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:11:49,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:11:49,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:11:49,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:11:49,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:11:49,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:11:49,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:11:49,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:11:49,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:11:49,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:11:49,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:11:49,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:11:49,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:11:49,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:11:49,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:11:49,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:11:49,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:11:49,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:11:49,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:11:49,483 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:11:49,529 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:11:49,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:11:49,532 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:11:49,533 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:11:49,540 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:11:49,540 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:11:49,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:11:49,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:11:49,542 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:11:49,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:11:49,543 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:11:49,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:11:49,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:11:49,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:11:49,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:11:49,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:11:49,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:11:49,545 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:11:49,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:11:49,545 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:11:49,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:11:49,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:11:49,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:11:49,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:11:49,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:11:49,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:11:49,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:11:49,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:11:49,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:11:49,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:11:49,550 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:11:49,550 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:11:49,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:11:49,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:11:49,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f8161fc7f730bddeac54a8f174c52e5ef9cd819e9497e3a4087e68b96d46105 [2021-11-13 18:11:49,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:11:49,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:11:49,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:11:49,862 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:11:49,863 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:11:49,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i [2021-11-13 18:11:49,933 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/data/553380f43/a4a008905b0a4ddc9c2caa5c2660faaa/FLAGee9804c29 [2021-11-13 18:11:50,413 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:11:50,413 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i [2021-11-13 18:11:50,439 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/data/553380f43/a4a008905b0a4ddc9c2caa5c2660faaa/FLAGee9804c29 [2021-11-13 18:11:50,756 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/data/553380f43/a4a008905b0a4ddc9c2caa5c2660faaa [2021-11-13 18:11:50,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:11:50,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:11:50,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:11:50,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:11:50,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:11:50,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:11:50" (1/1) ... [2021-11-13 18:11:50,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45b1b50e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:50, skipping insertion in model container [2021-11-13 18:11:50,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:11:50" (1/1) ... [2021-11-13 18:11:50,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:11:50,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:11:51,200 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22569,22582] [2021-11-13 18:11:51,205 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22645,22658] [2021-11-13 18:11:51,206 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22715,22728] [2021-11-13 18:11:51,209 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22822,22835] [2021-11-13 18:11:51,210 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22894,22907] [2021-11-13 18:11:51,212 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[23045,23058] [2021-11-13 18:11:51,215 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[23119,23132] [2021-11-13 18:11:51,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:11:51,239 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:11:51,273 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22569,22582] [2021-11-13 18:11:51,275 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22645,22658] [2021-11-13 18:11:51,275 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22715,22728] [2021-11-13 18:11:51,277 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22822,22835] [2021-11-13 18:11:51,277 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22894,22907] [2021-11-13 18:11:51,279 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[23045,23058] [2021-11-13 18:11:51,280 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[23119,23132] [2021-11-13 18:11:51,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:11:51,314 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:11:51,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:51 WrapperNode [2021-11-13 18:11:51,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:11:51,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:11:51,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:11:51,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:11:51,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:51" (1/1) ... [2021-11-13 18:11:51,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:51" (1/1) ... [2021-11-13 18:11:51,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:11:51,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:11:51,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:11:51,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:11:51,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:51" (1/1) ... [2021-11-13 18:11:51,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:51" (1/1) ... [2021-11-13 18:11:51,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:51" (1/1) ... [2021-11-13 18:11:51,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:51" (1/1) ... [2021-11-13 18:11:51,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:51" (1/1) ... [2021-11-13 18:11:51,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:51" (1/1) ... [2021-11-13 18:11:51,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:51" (1/1) ... [2021-11-13 18:11:51,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:11:51,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:11:51,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:11:51,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:11:51,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:51" (1/1) ... [2021-11-13 18:11:51,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:11:51,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:11:51,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:11:51,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:11:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:11:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:11:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:11:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:11:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:11:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:11:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:11:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:11:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:11:51,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:11:51,958 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:11:51,959 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-13 18:11:51,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:11:51 BoogieIcfgContainer [2021-11-13 18:11:51,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:11:51,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:11:51,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:11:51,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:11:51,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:11:50" (1/3) ... [2021-11-13 18:11:51,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344c765f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:11:51, skipping insertion in model container [2021-11-13 18:11:51,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:51" (2/3) ... [2021-11-13 18:11:51,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344c765f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:11:51, skipping insertion in model container [2021-11-13 18:11:51,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:11:51" (3/3) ... [2021-11-13 18:11:51,971 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-1.i [2021-11-13 18:11:51,975 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:11:51,975 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-13 18:11:52,020 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:11:52,027 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:11:52,027 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-13 18:11:52,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 46 states have internal predecessors, (76), 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) [2021-11-13 18:11:52,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-13 18:11:52,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:11:52,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-13 18:11:52,050 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:11:52,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:52,056 INFO L85 PathProgramCache]: Analyzing trace with hash 891600134, now seen corresponding path program 1 times [2021-11-13 18:11:52,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:52,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102444808] [2021-11-13 18:11:52,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:52,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:52,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:11:52,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:11:52,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102444808] [2021-11-13 18:11:52,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102444808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:11:52,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:11:52,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:11:52,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862228800] [2021-11-13 18:11:52,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:11:52,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:11:52,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:11:52,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:11:52,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:11:52,276 INFO L87 Difference]: Start difference. First operand has 47 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 46 states have internal predecessors, (76), 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-13 18:11:52,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:11:52,300 INFO L93 Difference]: Finished difference Result 92 states and 150 transitions. [2021-11-13 18:11:52,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:11:52,302 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-11-13 18:11:52,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:11:52,311 INFO L225 Difference]: With dead ends: 92 [2021-11-13 18:11:52,312 INFO L226 Difference]: Without dead ends: 41 [2021-11-13 18:11:52,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:11:52,335 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.76ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:11:52,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 1.76ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:11:52,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-13 18:11:52,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-11-13 18:11:52,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 40 states have internal predecessors, (44), 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) [2021-11-13 18:11:52,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2021-11-13 18:11:52,372 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 6 [2021-11-13 18:11:52,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:11:52,372 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2021-11-13 18:11:52,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-13 18:11:52,373 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2021-11-13 18:11:52,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 18:11:52,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:11:52,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:52,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:11:52,374 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:11:52,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:52,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1806905862, now seen corresponding path program 1 times [2021-11-13 18:11:52,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:52,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688041257] [2021-11-13 18:11:52,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:52,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:52,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:11:52,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:11:52,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688041257] [2021-11-13 18:11:52,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688041257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:11:52,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:11:52,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:11:52,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680175120] [2021-11-13 18:11:52,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:11:52,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:11:52,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:11:52,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:11:52,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:11:52,455 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-13 18:11:52,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:11:52,528 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2021-11-13 18:11:52,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:11:52,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-11-13 18:11:52,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:11:52,529 INFO L225 Difference]: With dead ends: 44 [2021-11-13 18:11:52,530 INFO L226 Difference]: Without dead ends: 40 [2021-11-13 18:11:52,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:11:52,532 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 59 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.54ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.34ms IncrementalHoareTripleChecker+Time [2021-11-13 18:11:52,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 37 Invalid, 27 Unknown, 0 Unchecked, 2.54ms Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 54.34ms Time] [2021-11-13 18:11:52,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-13 18:11:52,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-11-13 18:11:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.25) internal successors, (40), 36 states have internal predecessors, (40), 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) [2021-11-13 18:11:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-11-13 18:11:52,539 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 7 [2021-11-13 18:11:52,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:11:52,540 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-11-13 18:11:52,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-13 18:11:52,541 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-11-13 18:11:52,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-13 18:11:52,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:11:52,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:52,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:11:52,542 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:11:52,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:52,543 INFO L85 PathProgramCache]: Analyzing trace with hash 179566605, now seen corresponding path program 1 times [2021-11-13 18:11:52,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:52,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106938188] [2021-11-13 18:11:52,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:52,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:52,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:11:52,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:11:52,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106938188] [2021-11-13 18:11:52,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106938188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:11:52,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:11:52,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:11:52,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15530802] [2021-11-13 18:11:52,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:11:52,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:11:52,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:11:52,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:11:52,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:11:52,635 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-13 18:11:52,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:11:52,693 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2021-11-13 18:11:52,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:11:52,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-11-13 18:11:52,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:11:52,694 INFO L225 Difference]: With dead ends: 37 [2021-11-13 18:11:52,694 INFO L226 Difference]: Without dead ends: 35 [2021-11-13 18:11:52,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:11:52,696 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 11 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.55ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.89ms IncrementalHoareTripleChecker+Time [2021-11-13 18:11:52,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 77 Invalid, 24 Unknown, 0 Unchecked, 2.55ms Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 41.89ms Time] [2021-11-13 18:11:52,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-13 18:11:52,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-11-13 18:11:52,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 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) [2021-11-13 18:11:52,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-11-13 18:11:52,703 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 8 [2021-11-13 18:11:52,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:11:52,703 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-11-13 18:11:52,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-13 18:11:52,704 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2021-11-13 18:11:52,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 18:11:52,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:11:52,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:52,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:11:52,705 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:11:52,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:52,707 INFO L85 PathProgramCache]: Analyzing trace with hash 711412120, now seen corresponding path program 1 times [2021-11-13 18:11:52,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:52,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241230992] [2021-11-13 18:11:52,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:52,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:52,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:11:52,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:11:52,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241230992] [2021-11-13 18:11:52,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241230992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:11:52,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:11:52,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:11:52,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076812176] [2021-11-13 18:11:52,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:11:52,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:11:52,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:11:52,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:11:52,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:11:52,840 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-11-13 18:11:53,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:11:53,035 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2021-11-13 18:11:53,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:11:53,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2021-11-13 18:11:53,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:11:53,037 INFO L225 Difference]: With dead ends: 60 [2021-11-13 18:11:53,037 INFO L226 Difference]: Without dead ends: 58 [2021-11-13 18:11:53,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:11:53,039 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 37 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 134.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 155.09ms IncrementalHoareTripleChecker+Time [2021-11-13 18:11:53,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 88 Invalid, 56 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 155.09ms Time] [2021-11-13 18:11:53,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-13 18:11:53,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 42. [2021-11-13 18:11:53,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 41 states have internal predecessors, (46), 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) [2021-11-13 18:11:53,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-11-13 18:11:53,047 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 10 [2021-11-13 18:11:53,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:11:53,048 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-11-13 18:11:53,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-11-13 18:11:53,048 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-11-13 18:11:53,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 18:11:53,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:11:53,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:53,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:11:53,050 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:11:53,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:53,051 INFO L85 PathProgramCache]: Analyzing trace with hash -2056579816, now seen corresponding path program 1 times [2021-11-13 18:11:53,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:53,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82261589] [2021-11-13 18:11:53,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:53,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:11:53,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:11:53,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82261589] [2021-11-13 18:11:53,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82261589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:11:53,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:11:53,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:11:53,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323363857] [2021-11-13 18:11:53,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:11:53,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:11:53,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:11:53,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:11:53,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:11:53,162 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-13 18:11:53,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:11:53,262 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-11-13 18:11:53,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:11:53,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-11-13 18:11:53,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:11:53,263 INFO L225 Difference]: With dead ends: 42 [2021-11-13 18:11:53,264 INFO L226 Difference]: Without dead ends: 40 [2021-11-13 18:11:53,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:11:53,265 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.00ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.34ms IncrementalHoareTripleChecker+Time [2021-11-13 18:11:53,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 70 Invalid, 27 Unknown, 0 Unchecked, 1.00ms Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 68.34ms Time] [2021-11-13 18:11:53,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-13 18:11:53,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-13 18:11:53,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 39 states have internal predecessors, (44), 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) [2021-11-13 18:11:53,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-11-13 18:11:53,272 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 11 [2021-11-13 18:11:53,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:11:53,273 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-11-13 18:11:53,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-13 18:11:53,273 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-11-13 18:11:53,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-13 18:11:53,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:11:53,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:53,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:11:53,275 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:11:53,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:53,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1285114177, now seen corresponding path program 1 times [2021-11-13 18:11:53,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:53,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180341762] [2021-11-13 18:11:53,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:53,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:53,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:11:53,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:11:53,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180341762] [2021-11-13 18:11:53,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180341762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:11:53,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:11:53,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:11:53,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789443385] [2021-11-13 18:11:53,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:11:53,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:11:53,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:11:53,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:11:53,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:11:53,394 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-11-13 18:11:53,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:11:53,484 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-11-13 18:11:53,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:11:53,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-11-13 18:11:53,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:11:53,485 INFO L225 Difference]: With dead ends: 55 [2021-11-13 18:11:53,485 INFO L226 Difference]: Without dead ends: 43 [2021-11-13 18:11:53,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:11:53,487 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.36ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.67ms IncrementalHoareTripleChecker+Time [2021-11-13 18:11:53,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 77 Invalid, 55 Unknown, 0 Unchecked, 1.36ms Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 73.67ms Time] [2021-11-13 18:11:53,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-13 18:11:53,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-11-13 18:11:53,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 41 states have internal predecessors, (46), 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) [2021-11-13 18:11:53,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-11-13 18:11:53,495 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 14 [2021-11-13 18:11:53,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:11:53,495 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-11-13 18:11:53,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-11-13 18:11:53,496 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-11-13 18:11:53,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 18:11:53,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:11:53,497 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:53,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:11:53,498 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:11:53,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:53,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1621160418, now seen corresponding path program 1 times [2021-11-13 18:11:53,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:53,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058771882] [2021-11-13 18:11:53,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:53,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:53,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:11:53,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:11:53,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058771882] [2021-11-13 18:11:53,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058771882] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:11:53,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890138930] [2021-11-13 18:11:53,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:53,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:11:53,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:11:53,601 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:11:53,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:11:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:53,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 18:11:53,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:11:53,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:11:53,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:11:53,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:11:53,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2021-11-13 18:11:53,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:11:53,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:11:53,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:11:53,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2021-11-13 18:11:54,096 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:11:54,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 31 [2021-11-13 18:11:54,105 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:11:54,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2021-11-13 18:11:54,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:11:54,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:11:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:11:54,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890138930] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:11:54,245 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:11:54,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2021-11-13 18:11:54,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120624747] [2021-11-13 18:11:54,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:11:54,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:11:54,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:11:54,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:11:54,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:11:54,248 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2021-11-13 18:11:54,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:11:54,454 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2021-11-13 18:11:54,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:11:54,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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 17 [2021-11-13 18:11:54,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:11:54,455 INFO L225 Difference]: With dead ends: 59 [2021-11-13 18:11:54,455 INFO L226 Difference]: Without dead ends: 37 [2021-11-13 18:11:54,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:11:54,457 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 20 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 128.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.03ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 152.70ms IncrementalHoareTripleChecker+Time [2021-11-13 18:11:54,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 129 Invalid, 76 Unknown, 0 Unchecked, 2.03ms Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 152.70ms Time] [2021-11-13 18:11:54,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-13 18:11:54,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-13 18:11:54,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 36 states have internal predecessors, (40), 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) [2021-11-13 18:11:54,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-11-13 18:11:54,466 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 17 [2021-11-13 18:11:54,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:11:54,466 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-11-13 18:11:54,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2021-11-13 18:11:54,467 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-11-13 18:11:54,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-13 18:11:54,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:11:54,473 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:54,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-13 18:11:54,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:11:54,687 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:11:54,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:54,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1036168340, now seen corresponding path program 1 times [2021-11-13 18:11:54,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:54,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356557188] [2021-11-13 18:11:54,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:54,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:11:54,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:11:54,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356557188] [2021-11-13 18:11:54,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356557188] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:11:54,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087735587] [2021-11-13 18:11:54,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:54,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:11:54,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:11:54,906 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:11:54,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:11:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:54,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-13 18:11:54,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:11:55,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:11:55,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 18:11:55,117 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:11:55,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 98 treesize of output 102 [2021-11-13 18:11:55,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:11:55,161 INFO L354 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2021-11-13 18:11:55,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 97 treesize of output 76 [2021-11-13 18:11:55,198 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-13 18:11:55,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 54 [2021-11-13 18:11:55,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-13 18:11:55,292 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:11:55,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-13 18:11:55,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836983295] [2021-11-13 18:11:55,293 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-13 18:11:55,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:11:55,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:11:55,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:11:55,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:11:55,295 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-11-13 18:11:55,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:11:55,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:11:55,296 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:11:55,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 0.02ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:11:55,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:11:55,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:11:55,523 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@616400d6 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 18:11:55,527 INFO L158 Benchmark]: Toolchain (without parser) took 4767.02ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 51.5MB in the beginning and 66.2MB in the end (delta: -14.8MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2021-11-13 18:11:55,527 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 90.2MB. Free memory was 68.9MB in the beginning and 68.8MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:11:55,528 INFO L158 Benchmark]: CACSL2BoogieTranslator took 554.03ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 51.3MB in the beginning and 77.2MB in the end (delta: -25.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-13 18:11:55,528 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.92ms. Allocated memory is still 109.1MB. Free memory was 77.2MB in the beginning and 74.6MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 18:11:55,528 INFO L158 Benchmark]: Boogie Preprocessor took 36.49ms. Allocated memory is still 109.1MB. Free memory was 74.6MB in the beginning and 73.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:11:55,528 INFO L158 Benchmark]: RCFGBuilder took 535.07ms. Allocated memory is still 109.1MB. Free memory was 73.0MB in the beginning and 56.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-13 18:11:55,529 INFO L158 Benchmark]: TraceAbstraction took 3563.81ms. Allocated memory is still 109.1MB. Free memory was 55.7MB in the beginning and 66.2MB in the end (delta: -10.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:11:55,531 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 90.2MB. Free memory was 68.9MB in the beginning and 68.8MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 554.03ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 51.3MB in the beginning and 77.2MB in the end (delta: -25.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.92ms. Allocated memory is still 109.1MB. Free memory was 77.2MB in the beginning and 74.6MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.49ms. Allocated memory is still 109.1MB. Free memory was 74.6MB in the beginning and 73.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 535.07ms. Allocated memory is still 109.1MB. Free memory was 73.0MB in the beginning and 56.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3563.81ms. Allocated memory is still 109.1MB. Free memory was 55.7MB in the beginning and 66.2MB in the end (delta: -10.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@616400d6 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@616400d6: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 18:11:55,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f8161fc7f730bddeac54a8f174c52e5ef9cd819e9497e3a4087e68b96d46105 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:11:58,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:11:58,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:11:58,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:11:58,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:11:58,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:11:58,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:11:58,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:11:58,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:11:58,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:11:58,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:11:58,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:11:58,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:11:58,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:11:58,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:11:58,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:11:58,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:11:58,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:11:58,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:11:58,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:11:58,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:11:58,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:11:58,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:11:58,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:11:58,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:11:58,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:11:58,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:11:58,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:11:58,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:11:58,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:11:58,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:11:58,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:11:58,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:11:58,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:11:58,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:11:58,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:11:58,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:11:58,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:11:58,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:11:58,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:11:58,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:11:58,122 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-13 18:11:58,164 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:11:58,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:11:58,166 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:11:58,166 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:11:58,167 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:11:58,167 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:11:58,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:11:58,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:11:58,169 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:11:58,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:11:58,170 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:11:58,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:11:58,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:11:58,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:11:58,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:11:58,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:11:58,171 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:11:58,172 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:11:58,172 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:11:58,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:11:58,172 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:11:58,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:11:58,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:11:58,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:11:58,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:11:58,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:11:58,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:11:58,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:11:58,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:11:58,174 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:11:58,174 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:11:58,174 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:11:58,175 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:11:58,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:11:58,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:11:58,175 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:11:58,176 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f8161fc7f730bddeac54a8f174c52e5ef9cd819e9497e3a4087e68b96d46105 [2021-11-13 18:11:58,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:11:58,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:11:58,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:11:58,574 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:11:58,574 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:11:58,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i [2021-11-13 18:11:58,651 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/data/500260598/fd64f98422ad4d49aec582577e8f938e/FLAG7b61afba2 [2021-11-13 18:11:59,176 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:11:59,176 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i [2021-11-13 18:11:59,192 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/data/500260598/fd64f98422ad4d49aec582577e8f938e/FLAG7b61afba2 [2021-11-13 18:11:59,504 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/data/500260598/fd64f98422ad4d49aec582577e8f938e [2021-11-13 18:11:59,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:11:59,508 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:11:59,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:11:59,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:11:59,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:11:59,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:11:59" (1/1) ... [2021-11-13 18:11:59,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a53884f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:59, skipping insertion in model container [2021-11-13 18:11:59,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:11:59" (1/1) ... [2021-11-13 18:11:59,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:11:59,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:11:59,923 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22569,22582] [2021-11-13 18:11:59,935 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22645,22658] [2021-11-13 18:11:59,936 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22715,22728] [2021-11-13 18:11:59,937 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22822,22835] [2021-11-13 18:11:59,938 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22894,22907] [2021-11-13 18:11:59,940 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[23045,23058] [2021-11-13 18:11:59,941 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[23119,23132] [2021-11-13 18:11:59,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:11:59,980 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:12:00,033 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22569,22582] [2021-11-13 18:12:00,034 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22645,22658] [2021-11-13 18:12:00,035 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22715,22728] [2021-11-13 18:12:00,036 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22822,22835] [2021-11-13 18:12:00,037 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[22894,22907] [2021-11-13 18:12:00,040 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[23045,23058] [2021-11-13 18:12:00,044 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_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-1.i[23119,23132] [2021-11-13 18:12:00,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:12:00,095 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:12:00,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:00 WrapperNode [2021-11-13 18:12:00,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:12:00,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:12:00,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:12:00,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:12:00,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:00" (1/1) ... [2021-11-13 18:12:00,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:00" (1/1) ... [2021-11-13 18:12:00,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:12:00,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:12:00,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:12:00,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:12:00,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:00" (1/1) ... [2021-11-13 18:12:00,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:00" (1/1) ... [2021-11-13 18:12:00,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:00" (1/1) ... [2021-11-13 18:12:00,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:00" (1/1) ... [2021-11-13 18:12:00,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:00" (1/1) ... [2021-11-13 18:12:00,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:00" (1/1) ... [2021-11-13 18:12:00,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:00" (1/1) ... [2021-11-13 18:12:00,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:12:00,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:12:00,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:12:00,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:12:00,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:00" (1/1) ... [2021-11-13 18:12:00,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:12:00,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:12:00,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:12:00,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:12:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 18:12:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:12:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:12:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:12:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:12:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:12:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 18:12:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:12:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:12:00,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:12:01,531 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:12:01,531 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-13 18:12:01,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:12:01 BoogieIcfgContainer [2021-11-13 18:12:01,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:12:01,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:12:01,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:12:01,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:12:01,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:11:59" (1/3) ... [2021-11-13 18:12:01,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e8c512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:12:01, skipping insertion in model container [2021-11-13 18:12:01,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:00" (2/3) ... [2021-11-13 18:12:01,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e8c512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:12:01, skipping insertion in model container [2021-11-13 18:12:01,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:12:01" (3/3) ... [2021-11-13 18:12:01,542 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-1.i [2021-11-13 18:12:01,547 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:12:01,548 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-13 18:12:01,612 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:12:01,619 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:12:01,620 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-13 18:12:01,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 38 states have (on average 1.9736842105263157) internal successors, (75), 45 states have internal predecessors, (75), 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) [2021-11-13 18:12:01,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-13 18:12:01,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:12:01,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-13 18:12:01,641 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:12:01,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:12:01,646 INFO L85 PathProgramCache]: Analyzing trace with hash 891569350, now seen corresponding path program 1 times [2021-11-13 18:12:01,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:12:01,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545784939] [2021-11-13 18:12:01,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:12:01,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:12:01,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:12:01,665 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:12:01,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:12:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:01,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 18:12:01,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:12:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:12:01,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:12:01,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:12:01,821 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:12:01,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545784939] [2021-11-13 18:12:01,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545784939] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:12:01,822 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:12:01,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:12:01,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274896784] [2021-11-13 18:12:01,825 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:12:01,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:12:01,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:12:01,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:12:01,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:12:01,859 INFO L87 Difference]: Start difference. First operand has 46 states, 38 states have (on average 1.9736842105263157) internal successors, (75), 45 states have internal predecessors, (75), 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-13 18:12:01,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:12:01,879 INFO L93 Difference]: Finished difference Result 90 states and 148 transitions. [2021-11-13 18:12:01,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:12:01,881 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-11-13 18:12:01,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:12:01,889 INFO L225 Difference]: With dead ends: 90 [2021-11-13 18:12:01,889 INFO L226 Difference]: Without dead ends: 40 [2021-11-13 18:12:01,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:12:01,895 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:12:01,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.92ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:12:01,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-13 18:12:01,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-13 18:12:01,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.303030303030303) internal successors, (43), 39 states have internal predecessors, (43), 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) [2021-11-13 18:12:01,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-11-13 18:12:01,928 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 6 [2021-11-13 18:12:01,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:12:01,929 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-11-13 18:12:01,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-13 18:12:01,929 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-11-13 18:12:01,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-13 18:12:01,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:12:01,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-13 18:12:01,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:12:02,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:12:02,146 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:12:02,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:12:02,147 INFO L85 PathProgramCache]: Analyzing trace with hash 889692517, now seen corresponding path program 1 times [2021-11-13 18:12:02,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:12:02,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063383695] [2021-11-13 18:12:02,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:12:02,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:12:02,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:12:02,149 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:12:02,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:12:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:02,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:12:02,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:12:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:12:02,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:12:02,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:12:02,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:12:02,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063383695] [2021-11-13 18:12:02,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063383695] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:12:02,297 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:12:02,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:12:02,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611340769] [2021-11-13 18:12:02,298 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:12:02,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:12:02,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:12:02,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:12:02,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:12:02,300 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-11-13 18:12:02,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:12:02,747 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-11-13 18:12:02,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:12:02,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-11-13 18:12:02,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:12:02,749 INFO L225 Difference]: With dead ends: 43 [2021-11-13 18:12:02,749 INFO L226 Difference]: Without dead ends: 39 [2021-11-13 18:12:02,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:12:02,751 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 58 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 402.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.05ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 424.87ms IncrementalHoareTripleChecker+Time [2021-11-13 18:12:02,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 36 Invalid, 27 Unknown, 0 Unchecked, 2.05ms Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 424.87ms Time] [2021-11-13 18:12:02,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-13 18:12:02,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2021-11-13 18:12:02,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 35 states have internal predecessors, (39), 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) [2021-11-13 18:12:02,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-11-13 18:12:02,759 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 6 [2021-11-13 18:12:02,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:12:02,760 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-11-13 18:12:02,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-11-13 18:12:02,761 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-11-13 18:12:02,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 18:12:02,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:12:02,761 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:12:02,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-13 18:12:02,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:12:02,980 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:12:02,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:12:02,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723981, now seen corresponding path program 1 times [2021-11-13 18:12:02,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:12:02,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792689009] [2021-11-13 18:12:02,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:12:02,982 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:12:02,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:12:02,983 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:12:02,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:12:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:03,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:12:03,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:12:03,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 18:12:03,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-13 18:12:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:12:03,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:12:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:12:03,241 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:12:03,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792689009] [2021-11-13 18:12:03,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [792689009] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:12:03,241 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:12:03,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:12:03,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568815399] [2021-11-13 18:12:03,242 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:12:03,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:12:03,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:12:03,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:12:03,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:12:03,246 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-13 18:12:03,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:12:03,493 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-11-13 18:12:03,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:12:03,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-11-13 18:12:03,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:12:03,495 INFO L225 Difference]: With dead ends: 36 [2021-11-13 18:12:03,495 INFO L226 Difference]: Without dead ends: 34 [2021-11-13 18:12:03,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:12:03,497 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 10 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 203.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.34ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 226.67ms IncrementalHoareTripleChecker+Time [2021-11-13 18:12:03,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 75 Invalid, 24 Unknown, 0 Unchecked, 1.34ms Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 226.67ms Time] [2021-11-13 18:12:03,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-13 18:12:03,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-13 18:12:03,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 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) [2021-11-13 18:12:03,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-11-13 18:12:03,504 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 7 [2021-11-13 18:12:03,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:12:03,504 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-11-13 18:12:03,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-13 18:12:03,505 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-11-13 18:12:03,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 18:12:03,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:12:03,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:12:03,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-13 18:12:03,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:12:03,718 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:12:03,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:12:03,719 INFO L85 PathProgramCache]: Analyzing trace with hash 590587384, now seen corresponding path program 1 times [2021-11-13 18:12:03,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:12:03,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722727316] [2021-11-13 18:12:03,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:12:03,720 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:12:03,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:12:03,721 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:12:03,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:12:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:03,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:12:03,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:12:03,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 18:12:03,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-13 18:12:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:12:03,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:12:03,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:12:03,944 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:12:03,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722727316] [2021-11-13 18:12:03,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722727316] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:12:03,947 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:12:03,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 18:12:03,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262143480] [2021-11-13 18:12:03,948 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:12:03,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:12:03,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:12:03,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:12:03,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:12:03,950 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2021-11-13 18:12:04,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:12:04,525 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2021-11-13 18:12:04,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:12:04,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2021-11-13 18:12:04,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:12:04,527 INFO L225 Difference]: With dead ends: 58 [2021-11-13 18:12:04,532 INFO L226 Difference]: Without dead ends: 56 [2021-11-13 18:12:04,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:12:04,534 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 35 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 453.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.80ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 512.63ms IncrementalHoareTripleChecker+Time [2021-11-13 18:12:04,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 85 Invalid, 56 Unknown, 0 Unchecked, 2.80ms Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 512.63ms Time] [2021-11-13 18:12:04,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-13 18:12:04,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 40. [2021-11-13 18:12:04,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 39 states have internal predecessors, (44), 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) [2021-11-13 18:12:04,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-11-13 18:12:04,543 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 9 [2021-11-13 18:12:04,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:12:04,543 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-11-13 18:12:04,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2021-11-13 18:12:04,544 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-11-13 18:12:04,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 18:12:04,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:12:04,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:12:04,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:12:04,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:12:04,758 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:12:04,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:12:04,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1507179337, now seen corresponding path program 1 times [2021-11-13 18:12:04,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:12:04,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557319159] [2021-11-13 18:12:04,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:12:04,760 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:12:04,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:12:04,761 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:12:04,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:12:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:04,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:12:04,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:12:06,913 INFO L354 Elim1Store]: treesize reduction 163, result has 25.6 percent of original size [2021-11-13 18:12:06,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 141 treesize of output 126 [2021-11-13 18:12:09,854 INFO L354 Elim1Store]: treesize reduction 163, result has 25.6 percent of original size [2021-11-13 18:12:09,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 111 [2021-11-13 18:12:13,397 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:12:13,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 135 treesize of output 142 [2021-11-13 18:12:13,458 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:12:13,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 142 treesize of output 141 [2021-11-13 18:12:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:12:14,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:12:14,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:12:14,706 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:12:14,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557319159] [2021-11-13 18:12:14,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557319159] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:12:14,707 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:12:14,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 18:12:14,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030546024] [2021-11-13 18:12:14,708 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:12:14,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:12:14,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:12:14,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:12:14,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:12:14,713 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-11-13 18:12:15,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:12:15,218 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2021-11-13 18:12:15,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:12:15,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 10 [2021-11-13 18:12:15,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:12:15,220 INFO L225 Difference]: With dead ends: 44 [2021-11-13 18:12:15,220 INFO L226 Difference]: Without dead ends: 42 [2021-11-13 18:12:15,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:12:15,221 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 461.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.15ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 496.85ms IncrementalHoareTripleChecker+Time [2021-11-13 18:12:15,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 76 Invalid, 30 Unknown, 0 Unchecked, 1.15ms Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 6 Unchecked, 496.85ms Time] [2021-11-13 18:12:15,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-13 18:12:15,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2021-11-13 18:12:15,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.2) internal successors, (42), 37 states have internal predecessors, (42), 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) [2021-11-13 18:12:15,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-11-13 18:12:15,228 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 10 [2021-11-13 18:12:15,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:12:15,229 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-11-13 18:12:15,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-11-13 18:12:15,229 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-11-13 18:12:15,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 18:12:15,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:12:15,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:12:15,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-13 18:12:15,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:12:15,468 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:12:15,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:12:15,469 INFO L85 PathProgramCache]: Analyzing trace with hash 2079156959, now seen corresponding path program 1 times [2021-11-13 18:12:15,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:12:15,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5151740] [2021-11-13 18:12:15,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:12:15,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:12:15,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:12:15,471 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:12:15,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:12:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:15,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:12:15,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:12:15,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 18:12:15,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-13 18:12:15,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:12:15,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:12:15,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:12:15,747 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:12:15,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5151740] [2021-11-13 18:12:15,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5151740] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:12:15,748 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:12:15,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 18:12:15,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573410556] [2021-11-13 18:12:15,748 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:12:15,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:12:15,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:12:15,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:12:15,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:12:15,750 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2021-11-13 18:12:16,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:12:16,994 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2021-11-13 18:12:16,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:12:16,995 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 13 [2021-11-13 18:12:16,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:12:16,997 INFO L225 Difference]: With dead ends: 66 [2021-11-13 18:12:16,997 INFO L226 Difference]: Without dead ends: 54 [2021-11-13 18:12:16,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:12:16,998 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 41 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1144.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.94ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1196.95ms IncrementalHoareTripleChecker+Time [2021-11-13 18:12:16,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 126 Invalid, 81 Unknown, 0 Unchecked, 1.94ms Time], IncrementalHoareTripleChecker [11 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 1196.95ms Time] [2021-11-13 18:12:17,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-13 18:12:17,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 41. [2021-11-13 18:12:17,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 40 states have internal predecessors, (45), 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) [2021-11-13 18:12:17,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2021-11-13 18:12:17,006 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 13 [2021-11-13 18:12:17,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:12:17,006 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-11-13 18:12:17,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2021-11-13 18:12:17,007 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2021-11-13 18:12:17,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-13 18:12:17,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:12:17,008 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:12:17,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:12:17,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:12:17,240 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:12:17,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:12:17,243 INFO L85 PathProgramCache]: Analyzing trace with hash -734247455, now seen corresponding path program 1 times [2021-11-13 18:12:17,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:12:17,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459995325] [2021-11-13 18:12:17,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:12:17,244 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:12:17,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:12:17,245 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:12:17,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:12:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:17,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:12:17,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:12:17,373 INFO L354 Elim1Store]: treesize reduction 82, result has 17.2 percent of original size [2021-11-13 18:12:17,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 17 [2021-11-13 18:12:17,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:12:17,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:12:17,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:12:17,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2021-11-13 18:12:17,665 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-13 18:12:17,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2021-11-13 18:12:17,672 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-13 18:12:17,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 13 [2021-11-13 18:12:17,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:12:17,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:12:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:12:17,875 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:12:17,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459995325] [2021-11-13 18:12:17,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459995325] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:12:17,876 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:12:17,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-11-13 18:12:17,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603475663] [2021-11-13 18:12:17,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:12:17,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:12:17,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:12:17,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:12:17,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:12:17,878 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-11-13 18:12:19,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:12:19,302 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2021-11-13 18:12:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:12:19,303 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 16 [2021-11-13 18:12:19,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:12:19,304 INFO L225 Difference]: With dead ends: 55 [2021-11-13 18:12:19,304 INFO L226 Difference]: Without dead ends: 33 [2021-11-13 18:12:19,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:12:19,307 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1270.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.50ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1336.18ms IncrementalHoareTripleChecker+Time [2021-11-13 18:12:19,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 124 Invalid, 76 Unknown, 0 Unchecked, 1.50ms Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 1336.18ms Time] [2021-11-13 18:12:19,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-13 18:12:19,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-13 18:12:19,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.2) internal successors, (36), 32 states have internal predecessors, (36), 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) [2021-11-13 18:12:19,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-11-13 18:12:19,316 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 16 [2021-11-13 18:12:19,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:12:19,316 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-11-13 18:12:19,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-11-13 18:12:19,316 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-11-13 18:12:19,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 18:12:19,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:12:19,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:12:19,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:12:19,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:12:19,518 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 18:12:19,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:12:19,518 INFO L85 PathProgramCache]: Analyzing trace with hash -587248931, now seen corresponding path program 1 times [2021-11-13 18:12:19,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:12:19,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285307752] [2021-11-13 18:12:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:12:19,519 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:12:19,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:12:19,520 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:12:19,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:12:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:19,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-13 18:12:19,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:12:19,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:12:19,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 18:12:19,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:12:19,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:12:19,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:12:19,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 56 [2021-11-13 18:12:19,794 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-13 18:12:19,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 34 [2021-11-13 18:12:19,816 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-13 18:12:19,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 38 [2021-11-13 18:12:19,935 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:12:19,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285307752] [2021-11-13 18:12:19,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-13 18:12:19,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [839479959] [2021-11-13 18:12:19,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:12:19,937 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 18:12:19,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/cvc4 [2021-11-13 18:12:19,940 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 18:12:19,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-13 18:12:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:20,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-13 18:12:20,097 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@484ab15d [2021-11-13 18:12:20,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310557697] [2021-11-13 18:12:20,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:12:20,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:12:20,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:12:20,099 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:12:20,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-13 18:12:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:20,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-13 18:12:20,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@484ab15d [2021-11-13 18:12:20,165 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:12:20,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-13 18:12:20,165 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-11-13 18:12:20,165 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-13 18:12:20,170 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-11-13 18:12:20,172 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-11-13 18:12:20,172 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2021-11-13 18:12:20,172 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2021-11-13 18:12:20,173 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2021-11-13 18:12:20,173 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2021-11-13 18:12:20,173 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-11-13 18:12:20,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:12:20,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:12:20,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:12:20,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:12:20,777 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:12:20,779 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:12:20,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 06:12:20 BoogieIcfgContainer [2021-11-13 18:12:20,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 18:12:20,795 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 18:12:20,795 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 18:12:20,795 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 18:12:20,796 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:12:01" (3/4) ... [2021-11-13 18:12:20,801 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-13 18:12:20,802 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 18:12:20,802 INFO L158 Benchmark]: Toolchain (without parser) took 21293.93ms. Allocated memory was 75.5MB in the beginning and 94.4MB in the end (delta: 18.9MB). Free memory was 52.0MB in the beginning and 33.6MB in the end (delta: 18.4MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. [2021-11-13 18:12:20,803 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory was 34.9MB in the beginning and 34.8MB in the end (delta: 41.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:12:20,803 INFO L158 Benchmark]: CACSL2BoogieTranslator took 583.61ms. Allocated memory is still 75.5MB. Free memory was 51.8MB in the beginning and 51.4MB in the end (delta: 430.6kB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2021-11-13 18:12:20,804 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.45ms. Allocated memory is still 75.5MB. Free memory was 51.4MB in the beginning and 49.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:12:20,804 INFO L158 Benchmark]: Boogie Preprocessor took 75.45ms. Allocated memory is still 75.5MB. Free memory was 49.4MB in the beginning and 47.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:12:20,805 INFO L158 Benchmark]: RCFGBuilder took 1263.23ms. Allocated memory is still 75.5MB. Free memory was 47.3MB in the beginning and 29.5MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-13 18:12:20,805 INFO L158 Benchmark]: TraceAbstraction took 19258.76ms. Allocated memory was 75.5MB in the beginning and 94.4MB in the end (delta: 18.9MB). Free memory was 29.1MB in the beginning and 33.6MB in the end (delta: -4.5MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-11-13 18:12:20,805 INFO L158 Benchmark]: Witness Printer took 7.09ms. Allocated memory is still 94.4MB. Free memory is still 33.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:12:20,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory was 34.9MB in the beginning and 34.8MB in the end (delta: 41.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 583.61ms. Allocated memory is still 75.5MB. Free memory was 51.8MB in the beginning and 51.4MB in the end (delta: 430.6kB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.45ms. Allocated memory is still 75.5MB. Free memory was 51.4MB in the beginning and 49.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.45ms. Allocated memory is still 75.5MB. Free memory was 49.4MB in the beginning and 47.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1263.23ms. Allocated memory is still 75.5MB. Free memory was 47.3MB in the beginning and 29.5MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 19258.76ms. Allocated memory was 75.5MB in the beginning and 94.4MB in the end (delta: 18.9MB). Free memory was 29.1MB in the beginning and 33.6MB in the end (delta: -4.5MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * Witness Printer took 7.09ms. Allocated memory is still 94.4MB. Free memory is still 33.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1044]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1005] struct TSLL* list = malloc(sizeof(struct TSLL)); [L1006] list->next = ((void*)0) [L1007] list->prev = ((void*)0) [L1008] list->colour = BLACK [L1010] struct TSLL* end = list; [L1013] COND TRUE __VERIFIER_nondet_int() [L1016] end->next = malloc(sizeof(struct TSLL)) [L1017] EXPR end->next [L1017] end->next->prev = end [L1018] EXPR end->next [L1018] end = end->next [L1019] end->next = ((void*)0) [L1021] COND FALSE !(__VERIFIER_nondet_int()) [L1027] end->colour = RED [L1028] end->next = malloc(sizeof(struct TSLL)) [L1029] EXPR end->next [L1029] end->next->prev = end [L1030] EXPR end->next [L1030] end = end->next [L1031] end->next = ((void*)0) [L1032] end->colour = BLACK [L1034] EXPR end->colour [L1034] COND FALSE !(!(BLACK == end->colour)) [L1035] EXPR end->next [L1035] COND FALSE !(!(((void*)0) == end->next)) [L1036] COND FALSE !(!(((void*)0) != end)) [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1039] end = ((void*)0) [L1040] end = list [L1043] COND FALSE !(!(((void*)0) != end)) [L1044] EXPR end->colour [L1044] COND TRUE !(BLACK == end->colour) [L1044] reach_error() - UnprovableResult [Line: 1034]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1035]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1036]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1050]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 46 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 19.2s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 163 SdHoareTripleChecker+Valid, 4194.16ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 163 mSDsluCounter, 573 SdHoareTripleChecker+Invalid, 3935.74ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 6 IncrementalHoareTripleChecker+Unchecked, 361 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 245 IncrementalHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 212 mSDtfsCounter, 245 mSolverCounterSat, 11.69ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 36 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 120 ConstructedInterpolants, 4 QuantifiedInterpolants, 1407 SizeOfPredicates, 26 NumberOfNonLiveVariables, 420 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-13 18:12:20,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd32ebd-6a30-42b6-84ab-b822b7fcb04b/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN