./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-sorted-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-sorted-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF --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 e45b14428dafe2f20aeac8c38d2592befc15b6791b0365935474ded4fd47d0f2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:02:34,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:02:34,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:02:34,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:02:34,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:02:34,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:02:34,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:02:34,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:02:34,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:02:34,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:02:34,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:02:34,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:02:34,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:02:34,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:02:34,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:02:34,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:02:34,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:02:34,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:02:34,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:02:34,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:02:34,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:02:34,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:02:34,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:02:34,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:02:34,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:02:34,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:02:34,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:02:34,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:02:34,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:02:34,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:02:34,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:02:34,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:02:34,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:02:34,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:02:34,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:02:34,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:02:34,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:02:34,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:02:34,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:02:34,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:02:34,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:02:34,446 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:02:34,490 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:02:34,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:02:34,491 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:02:34,491 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:02:34,499 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:02:34,499 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:02:34,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:02:34,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:02:34,500 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:02:34,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:02:34,502 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:02:34,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:02:34,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:02:34,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:02:34,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:02:34,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:02:34,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:02:34,503 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:02:34,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:02:34,504 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:02:34,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:02:34,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:02:34,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:02:34,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:02:34,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:02:34,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:02:34,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:02:34,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:02:34,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:02:34,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:02:34,508 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:02:34,508 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:02:34,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:02:34,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:02:34,509 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_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e45b14428dafe2f20aeac8c38d2592befc15b6791b0365935474ded4fd47d0f2 [2021-11-20 06:02:34,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:02:34,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:02:34,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:02:34,839 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:02:34,840 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:02:34,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/forester-heap/sll-sorted-1.i [2021-11-20 06:02:34,928 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/data/597ac901e/0c6743dfdd54460397cd3dc0b6793c4f/FLAG1249bcaeb [2021-11-20 06:02:35,503 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:02:35,504 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/sv-benchmarks/c/forester-heap/sll-sorted-1.i [2021-11-20 06:02:35,525 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/data/597ac901e/0c6743dfdd54460397cd3dc0b6793c4f/FLAG1249bcaeb [2021-11-20 06:02:35,775 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/data/597ac901e/0c6743dfdd54460397cd3dc0b6793c4f [2021-11-20 06:02:35,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:02:35,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:02:35,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:02:35,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:02:35,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:02:35,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:02:35" (1/1) ... [2021-11-20 06:02:35,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a377cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:35, skipping insertion in model container [2021-11-20 06:02:35,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:02:35" (1/1) ... [2021-11-20 06:02:35,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:02:35,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:02:36,156 WARN L230 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_d58be799-0f7b-48f6-8af0-27615da8193b/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22317,22330] [2021-11-20 06:02:36,161 WARN L230 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_d58be799-0f7b-48f6-8af0-27615da8193b/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22547,22560] [2021-11-20 06:02:36,171 WARN L230 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_d58be799-0f7b-48f6-8af0-27615da8193b/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22877,22890] [2021-11-20 06:02:36,172 WARN L230 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_d58be799-0f7b-48f6-8af0-27615da8193b/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22941,22954] [2021-11-20 06:02:36,173 WARN L230 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_d58be799-0f7b-48f6-8af0-27615da8193b/sv-benchmarks/c/forester-heap/sll-sorted-1.i[23072,23085] [2021-11-20 06:02:36,174 WARN L230 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_d58be799-0f7b-48f6-8af0-27615da8193b/sv-benchmarks/c/forester-heap/sll-sorted-1.i[23136,23149] [2021-11-20 06:02:36,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:02:36,190 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:02:36,251 WARN L230 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_d58be799-0f7b-48f6-8af0-27615da8193b/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22317,22330] [2021-11-20 06:02:36,260 WARN L230 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_d58be799-0f7b-48f6-8af0-27615da8193b/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22547,22560] [2021-11-20 06:02:36,263 WARN L230 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_d58be799-0f7b-48f6-8af0-27615da8193b/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22877,22890] [2021-11-20 06:02:36,263 WARN L230 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_d58be799-0f7b-48f6-8af0-27615da8193b/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22941,22954] [2021-11-20 06:02:36,265 WARN L230 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_d58be799-0f7b-48f6-8af0-27615da8193b/sv-benchmarks/c/forester-heap/sll-sorted-1.i[23072,23085] [2021-11-20 06:02:36,266 WARN L230 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_d58be799-0f7b-48f6-8af0-27615da8193b/sv-benchmarks/c/forester-heap/sll-sorted-1.i[23136,23149] [2021-11-20 06:02:36,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:02:36,309 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:02:36,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:36 WrapperNode [2021-11-20 06:02:36,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:02:36,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:02:36,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:02:36,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:02:36,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:36" (1/1) ... [2021-11-20 06:02:36,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:36" (1/1) ... [2021-11-20 06:02:36,374 INFO L137 Inliner]: procedures = 119, calls = 39, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 186 [2021-11-20 06:02:36,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:02:36,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:02:36,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:02:36,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:02:36,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:36" (1/1) ... [2021-11-20 06:02:36,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:36" (1/1) ... [2021-11-20 06:02:36,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:36" (1/1) ... [2021-11-20 06:02:36,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:36" (1/1) ... [2021-11-20 06:02:36,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:36" (1/1) ... [2021-11-20 06:02:36,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:36" (1/1) ... [2021-11-20 06:02:36,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:36" (1/1) ... [2021-11-20 06:02:36,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:02:36,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:02:36,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:02:36,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:02:36,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:36" (1/1) ... [2021-11-20 06:02:36,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:02:36,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:02:36,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:02:36,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:02:36,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:02:36,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:02:36,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:02:36,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:02:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:02:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:02:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:02:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:02:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:02:36,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:02:36,654 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:02:36,655 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:02:36,990 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:02:36,997 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:02:36,997 INFO L301 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-20 06:02:36,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:02:36 BoogieIcfgContainer [2021-11-20 06:02:36,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:02:37,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:02:37,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:02:37,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:02:37,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:02:35" (1/3) ... [2021-11-20 06:02:37,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fa5fb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:02:37, skipping insertion in model container [2021-11-20 06:02:37,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:36" (2/3) ... [2021-11-20 06:02:37,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fa5fb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:02:37, skipping insertion in model container [2021-11-20 06:02:37,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:02:36" (3/3) ... [2021-11-20 06:02:37,007 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-sorted-1.i [2021-11-20 06:02:37,012 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:02:37,013 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-20 06:02:37,058 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:02:37,065 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 [2021-11-20 06:02:37,065 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-20 06:02:37,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 55 states have internal predecessors, (91), 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) [2021-11-20 06:02:37,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 06:02:37,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:37,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:02:37,086 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:02:37,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:37,091 INFO L85 PathProgramCache]: Analyzing trace with hash 890153286, now seen corresponding path program 1 times [2021-11-20 06:02:37,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:02:37,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439090948] [2021-11-20 06:02:37,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:37,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:02:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:37,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:02:37,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439090948] [2021-11-20 06:02:37,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439090948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:02:37,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:02:37,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:02:37,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944469904] [2021-11-20 06:02:37,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:02:37,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:02:37,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:02:37,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:02:37,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:02:37,286 INFO L87 Difference]: Start difference. First operand has 56 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 55 states have internal predecessors, (91), 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) [2021-11-20 06:02:37,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:37,306 INFO L93 Difference]: Finished difference Result 106 states and 172 transitions. [2021-11-20 06:02:37,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:02:37,309 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 [2021-11-20 06:02:37,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:37,317 INFO L225 Difference]: With dead ends: 106 [2021-11-20 06:02:37,317 INFO L226 Difference]: Without dead ends: 50 [2021-11-20 06:02:37,320 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 [2021-11-20 06:02:37,323 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:37,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:02:37,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-20 06:02:37,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-20 06:02:37,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 49 states have internal predecessors, (60), 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) [2021-11-20 06:02:37,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2021-11-20 06:02:37,358 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 6 [2021-11-20 06:02:37,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:37,359 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2021-11-20 06:02:37,359 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) [2021-11-20 06:02:37,359 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2021-11-20 06:02:37,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 06:02:37,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:37,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:02:37,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:02:37,361 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:02:37,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:37,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1806859191, now seen corresponding path program 1 times [2021-11-20 06:02:37,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:02:37,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230535887] [2021-11-20 06:02:37,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:37,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:02:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:37,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:37,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:02:37,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230535887] [2021-11-20 06:02:37,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230535887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:02:37,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:02:37,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:02:37,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47414307] [2021-11-20 06:02:37,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:02:37,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:02:37,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:02:37,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:02:37,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:02:37,414 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2021-11-20 06:02:37,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:37,450 INFO L93 Difference]: Finished difference Result 103 states and 126 transitions. [2021-11-20 06:02:37,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:02:37,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 [2021-11-20 06:02:37,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:37,452 INFO L225 Difference]: With dead ends: 103 [2021-11-20 06:02:37,452 INFO L226 Difference]: Without dead ends: 55 [2021-11-20 06:02:37,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:02:37,455 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 27 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:37,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 80 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:02:37,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-20 06:02:37,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-11-20 06:02:37,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 53 states have internal predecessors, (65), 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) [2021-11-20 06:02:37,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2021-11-20 06:02:37,464 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 7 [2021-11-20 06:02:37,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:37,465 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2021-11-20 06:02:37,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2021-11-20 06:02:37,465 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2021-11-20 06:02:37,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 06:02:37,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:37,466 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:02:37,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:02:37,467 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:02:37,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:37,468 INFO L85 PathProgramCache]: Analyzing trace with hash 443319948, now seen corresponding path program 1 times [2021-11-20 06:02:37,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:02:37,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364731633] [2021-11-20 06:02:37,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:37,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:02:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:37,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:02:37,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:02:37,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364731633] [2021-11-20 06:02:37,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364731633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:02:37,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:02:37,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:02:37,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175941104] [2021-11-20 06:02:37,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:02:37,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:02:37,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:02:37,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:02:37,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:02:37,545 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-11-20 06:02:37,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:37,635 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2021-11-20 06:02:37,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:02:37,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 11 [2021-11-20 06:02:37,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:37,637 INFO L225 Difference]: With dead ends: 87 [2021-11-20 06:02:37,637 INFO L226 Difference]: Without dead ends: 85 [2021-11-20 06:02:37,638 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 [2021-11-20 06:02:37,639 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 129 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:37,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 65 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:02:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-20 06:02:37,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 52. [2021-11-20 06:02:37,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 51 states have internal predecessors, (63), 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) [2021-11-20 06:02:37,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2021-11-20 06:02:37,649 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 11 [2021-11-20 06:02:37,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:37,649 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2021-11-20 06:02:37,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-11-20 06:02:37,650 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2021-11-20 06:02:37,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 06:02:37,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:37,651 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] [2021-11-20 06:02:37,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:02:37,651 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:02:37,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:37,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1236050174, now seen corresponding path program 1 times [2021-11-20 06:02:37,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:02:37,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65007094] [2021-11-20 06:02:37,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:37,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:02:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:37,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:37,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:02:37,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65007094] [2021-11-20 06:02:37,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65007094] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:02:37,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677336095] [2021-11-20 06:02:37,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:37,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:02:37,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:02:37,980 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:02:38,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:02:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:38,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-20 06:02:38,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:38,158 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 [2021-11-20 06:02:38,246 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-20 06:02:38,251 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 1 case distinctions, treesize of input 27 treesize of output 15 [2021-11-20 06:02:38,275 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-20 06:02:38,275 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 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-20 06:02:38,303 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:02:38,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2021-11-20 06:02:38,419 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 06:02:38,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 76 [2021-11-20 06:02:38,428 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 84 treesize of output 76 [2021-11-20 06:02:38,438 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 06:02:38,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 76 treesize of output 55 [2021-11-20 06:02:38,836 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 06:02:38,837 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 42 [2021-11-20 06:02:38,851 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 06:02:38,852 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 33 treesize of output 21 [2021-11-20 06:02:38,871 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 15 treesize of output 7 [2021-11-20 06:02:38,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:38,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:02:38,987 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 99 treesize of output 85 [2021-11-20 06:02:39,097 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 328 treesize of output 320 [2021-11-20 06:02:39,127 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 1545 treesize of output 1513 [2021-11-20 06:02:39,310 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 06:02:39,310 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:02:39,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-20 06:02:39,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838199881] [2021-11-20 06:02:39,311 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:02:39,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:02:39,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:02:39,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:02:39,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:02:39,313 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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) [2021-11-20 06:02:39,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:39,723 INFO L93 Difference]: Finished difference Result 98 states and 125 transitions. [2021-11-20 06:02:39,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:02:39,724 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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) Word has length 21 [2021-11-20 06:02:39,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:39,725 INFO L225 Difference]: With dead ends: 98 [2021-11-20 06:02:39,725 INFO L226 Difference]: Without dead ends: 96 [2021-11-20 06:02:39,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2021-11-20 06:02:39,727 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 56 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:39,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 315 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:02:39,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-20 06:02:39,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2021-11-20 06:02:39,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.353846153846154) internal successors, (88), 69 states have internal predecessors, (88), 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) [2021-11-20 06:02:39,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2021-11-20 06:02:39,737 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 21 [2021-11-20 06:02:39,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:39,738 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2021-11-20 06:02:39,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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) [2021-11-20 06:02:39,738 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2021-11-20 06:02:39,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 06:02:39,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:39,739 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:02:39,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-20 06:02:39,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:02:39,952 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:02:39,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:39,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1635781222, now seen corresponding path program 1 times [2021-11-20 06:02:39,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:02:39,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966202302] [2021-11-20 06:02:39,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:39,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:02:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:40,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:02:40,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966202302] [2021-11-20 06:02:40,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966202302] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:02:40,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749984460] [2021-11-20 06:02:40,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:40,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:02:40,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:02:40,172 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:02:40,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 06:02:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:40,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-20 06:02:40,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:40,256 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 [2021-11-20 06:02:40,311 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-20 06:02:40,312 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 1 case distinctions, treesize of input 27 treesize of output 15 [2021-11-20 06:02:40,331 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-20 06:02:40,331 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 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-20 06:02:40,348 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:02:40,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2021-11-20 06:02:40,421 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 06:02:40,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 65 [2021-11-20 06:02:40,427 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 06:02:40,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 65 treesize of output 44 [2021-11-20 06:02:40,701 INFO L354 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2021-11-20 06:02:40,702 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 68 [2021-11-20 06:02:40,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:40,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:02:45,224 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:02:45,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 13967 treesize of output 12803 [2021-11-20 06:02:47,461 INFO L354 Elim1Store]: treesize reduction 359, result has 54.0 percent of original size [2021-11-20 06:02:47,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 56 case distinctions, treesize of input 114770 treesize of output 109786 [2021-11-20 06:02:55,403 WARN L227 SmtUtils]: Spent 7.94s on a formula simplification. DAG size of input: 1035 DAG size of output: 1004 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-20 06:02:55,545 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:02:55,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 90082 treesize of output 90116 [2021-11-20 06:02:57,416 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 06:02:57,417 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:02:57,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-20 06:02:57,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369362414] [2021-11-20 06:02:57,417 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:02:57,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:02:57,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:02:57,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:02:57,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=193, Unknown=2, NotChecked=0, Total=240 [2021-11-20 06:02:57,419 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2021-11-20 06:02:59,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:59,099 INFO L93 Difference]: Finished difference Result 135 states and 170 transitions. [2021-11-20 06:02:59,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 06:02:59,099 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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 24 [2021-11-20 06:02:59,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:59,102 INFO L225 Difference]: With dead ends: 135 [2021-11-20 06:02:59,102 INFO L226 Difference]: Without dead ends: 97 [2021-11-20 06:02:59,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=72, Invalid=345, Unknown=3, NotChecked=0, Total=420 [2021-11-20 06:02:59,103 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 66 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:59,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 261 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:02:59,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-20 06:02:59,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 74. [2021-11-20 06:02:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.3333333333333333) internal successors, (92), 73 states have internal predecessors, (92), 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) [2021-11-20 06:02:59,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2021-11-20 06:02:59,113 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 24 [2021-11-20 06:02:59,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:59,113 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2021-11-20 06:02:59,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2021-11-20 06:02:59,114 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2021-11-20 06:02:59,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 06:02:59,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:59,115 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:02:59,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:59,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:02:59,328 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:02:59,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:59,329 INFO L85 PathProgramCache]: Analyzing trace with hash 826434596, now seen corresponding path program 1 times [2021-11-20 06:02:59,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:02:59,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229402247] [2021-11-20 06:02:59,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:59,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:02:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:59,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:02:59,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:02:59,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229402247] [2021-11-20 06:02:59,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229402247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:02:59,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:02:59,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:02:59,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404166032] [2021-11-20 06:02:59,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:02:59,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:02:59,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:02:59,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:02:59,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:02:59,414 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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) [2021-11-20 06:02:59,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:59,477 INFO L93 Difference]: Finished difference Result 121 states and 151 transitions. [2021-11-20 06:02:59,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:02:59,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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 24 [2021-11-20 06:02:59,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:59,478 INFO L225 Difference]: With dead ends: 121 [2021-11-20 06:02:59,478 INFO L226 Difference]: Without dead ends: 83 [2021-11-20 06:02:59,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:02:59,479 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 14 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:59,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 130 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:02:59,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-20 06:02:59,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 76. [2021-11-20 06:02:59,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.323943661971831) internal successors, (94), 75 states have internal predecessors, (94), 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) [2021-11-20 06:02:59,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 94 transitions. [2021-11-20 06:02:59,487 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 94 transitions. Word has length 24 [2021-11-20 06:02:59,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:59,487 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 94 transitions. [2021-11-20 06:02:59,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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) [2021-11-20 06:02:59,487 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 94 transitions. [2021-11-20 06:02:59,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 06:02:59,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:59,488 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:02:59,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:02:59,489 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 06:02:59,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:59,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1438181591, now seen corresponding path program 1 times [2021-11-20 06:02:59,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:02:59,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892358272] [2021-11-20 06:02:59,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:59,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:02:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:59,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:02:59,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892358272] [2021-11-20 06:02:59,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892358272] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:02:59,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338646355] [2021-11-20 06:02:59,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:59,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:02:59,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:02:59,849 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:02:59,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58be799-0f7b-48f6-8af0-27615da8193b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 06:02:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:59,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-20 06:02:59,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:59,938 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 [2021-11-20 06:02:59,980 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 06:02:59,980 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 17 treesize of output 21 [2021-11-20 06:02:59,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-20 06:03:00,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-20 06:03:00,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:03:00,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-20 06:03:00,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-20 06:03:00,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:03:00,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-20 06:03:00,275 INFO L354 Elim1Store]: treesize reduction 78, result has 16.1 percent of original size [2021-11-20 06:03:00,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 196 treesize of output 125 [2021-11-20 06:03:00,308 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-11-20 06:03:00,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 160 treesize of output 130 [2021-11-20 06:03:00,315 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 0 case distinctions, treesize of input 124 treesize of output 100 [2021-11-20 06:03:00,329 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-11-20 06:03:00,330 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 97 treesize of output 85 [2021-11-20 06:03:00,344 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-11-20 06:03:00,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 84 [2021-11-20 06:03:00,496 INFO L354 Elim1Store]: treesize reduction 126, result has 14.9 percent of original size [2021-11-20 06:03:00,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 203 treesize of output 114 [2021-11-20 06:03:00,510 INFO L354 Elim1Store]: treesize reduction 57, result has 16.2 percent of original size [2021-11-20 06:03:00,511 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 160 treesize of output 151 [2021-11-20 06:03:00,544 INFO L354 Elim1Store]: treesize reduction 226, result has 13.1 percent of original size [2021-11-20 06:03:00,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 148 treesize of output 114 [2021-11-20 06:03:00,953 INFO L354 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2021-11-20 06:03:00,954 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 139 treesize of output 85 [2021-11-20 06:03:00,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:03:00,966 INFO L354 Elim1Store]: treesize reduction 35, result has 7.9 percent of original size [2021-11-20 06:03:00,966 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 49 [2021-11-20 06:03:01,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:03:01,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:03:02,585 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 4270 treesize of output 4106 [2021-11-20 06:03:13,520 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 1691553577 treesize of output 1686572841