./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa --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 6070ac475d5b3c3d5905eb0c203232134efabc1c427fcfbbf8cf82789693617b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:15:54,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:15:54,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:15:54,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:15:54,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:15:54,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:15:54,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:15:54,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:15:54,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:15:54,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:15:54,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:15:54,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:15:54,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:15:54,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:15:54,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:15:54,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:15:54,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:15:54,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:15:54,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:15:54,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:15:54,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:15:54,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:15:54,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:15:54,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:15:54,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:15:54,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:15:54,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:15:54,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:15:54,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:15:54,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:15:54,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:15:54,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:15:54,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:15:54,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:15:54,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:15:54,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:15:54,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:15:54,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:15:54,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:15:54,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:15:54,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:15:54,414 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:15:54,430 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:15:54,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:15:54,431 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:15:54,431 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:15:54,431 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:15:54,431 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:15:54,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:15:54,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:15:54,432 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:15:54,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:15:54,432 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:15:54,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:15:54,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:15:54,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:15:54,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:15:54,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:15:54,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:15:54,433 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:15:54,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:15:54,434 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:15:54,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:15:54,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:15:54,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:15:54,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:15:54,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:15:54,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:15:54,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:15:54,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:15:54,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:15:54,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:15:54,435 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:15:54,435 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:15:54,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:15:54,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:15:54,436 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_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6070ac475d5b3c3d5905eb0c203232134efabc1c427fcfbbf8cf82789693617b [2021-12-06 18:15:54,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:15:54,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:15:54,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:15:54,646 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:15:54,646 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:15:54,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i [2021-12-06 18:15:54,692 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/data/4afb48815/6b21b8d9062140cfa521c56a2cdb41b4/FLAGc8139a173 [2021-12-06 18:15:55,111 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:15:55,111 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i [2021-12-06 18:15:55,120 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/data/4afb48815/6b21b8d9062140cfa521c56a2cdb41b4/FLAGc8139a173 [2021-12-06 18:15:55,129 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/data/4afb48815/6b21b8d9062140cfa521c56a2cdb41b4 [2021-12-06 18:15:55,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:15:55,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:15:55,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:15:55,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:15:55,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:15:55,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:15:55" (1/1) ... [2021-12-06 18:15:55,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52f45ee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:55, skipping insertion in model container [2021-12-06 18:15:55,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:15:55" (1/1) ... [2021-12-06 18:15:55,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:15:55,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:15:55,360 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_fd399356-59dd-427a-acef-57f9f278efd0/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22480,22493] [2021-12-06 18:15:55,363 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_fd399356-59dd-427a-acef-57f9f278efd0/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22552,22565] [2021-12-06 18:15:55,364 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_fd399356-59dd-427a-acef-57f9f278efd0/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22704,22717] [2021-12-06 18:15:55,365 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_fd399356-59dd-427a-acef-57f9f278efd0/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22778,22791] [2021-12-06 18:15:55,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:15:55,374 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:15:55,401 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_fd399356-59dd-427a-acef-57f9f278efd0/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22480,22493] [2021-12-06 18:15:55,402 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_fd399356-59dd-427a-acef-57f9f278efd0/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22552,22565] [2021-12-06 18:15:55,403 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_fd399356-59dd-427a-acef-57f9f278efd0/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22704,22717] [2021-12-06 18:15:55,404 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_fd399356-59dd-427a-acef-57f9f278efd0/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22778,22791] [2021-12-06 18:15:55,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:15:55,427 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:15:55,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:55 WrapperNode [2021-12-06 18:15:55,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:15:55,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:15:55,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:15:55,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:15:55,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:55" (1/1) ... [2021-12-06 18:15:55,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:55" (1/1) ... [2021-12-06 18:15:55,464 INFO L137 Inliner]: procedures = 119, calls = 32, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 116 [2021-12-06 18:15:55,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:15:55,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:15:55,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:15:55,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:15:55,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:55" (1/1) ... [2021-12-06 18:15:55,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:55" (1/1) ... [2021-12-06 18:15:55,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:55" (1/1) ... [2021-12-06 18:15:55,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:55" (1/1) ... [2021-12-06 18:15:55,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:55" (1/1) ... [2021-12-06 18:15:55,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:55" (1/1) ... [2021-12-06 18:15:55,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:55" (1/1) ... [2021-12-06 18:15:55,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:15:55,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:15:55,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:15:55,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:15:55,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:55" (1/1) ... [2021-12-06 18:15:55,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:15:55,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:15:55,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:15:55,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:15:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 18:15:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 18:15:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 18:15:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:15:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 18:15:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 18:15:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:15:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:15:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:15:55,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:15:55,615 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:15:55,616 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:15:55,749 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:15:55,754 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:15:55,755 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-06 18:15:55,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:15:55 BoogieIcfgContainer [2021-12-06 18:15:55,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:15:55,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:15:55,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:15:55,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:15:55,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:15:55" (1/3) ... [2021-12-06 18:15:55,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b81ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:15:55, skipping insertion in model container [2021-12-06 18:15:55,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:15:55" (2/3) ... [2021-12-06 18:15:55,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b81ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:15:55, skipping insertion in model container [2021-12-06 18:15:55,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:15:55" (3/3) ... [2021-12-06 18:15:55,764 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-1.i [2021-12-06 18:15:55,770 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:15:55,770 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-06 18:15:55,810 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:15:55,816 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 [2021-12-06 18:15:55,816 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-06 18:15:55,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 32 states have internal predecessors, (53), 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) [2021-12-06 18:15:55,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 18:15:55,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:15:55,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 18:15:55,832 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 18:15:55,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:15:55,836 INFO L85 PathProgramCache]: Analyzing trace with hash 889968582, now seen corresponding path program 1 times [2021-12-06 18:15:55,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:15:55,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868414468] [2021-12-06 18:15:55,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:15:55,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:15:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:15:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:15:55,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:15:55,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868414468] [2021-12-06 18:15:55,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868414468] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:15:55,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:15:55,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:15:55,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955839262] [2021-12-06 18:15:55,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:15:55,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 18:15:55,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:15:55,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 18:15:55,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:15:55,985 INFO L87 Difference]: Start difference. First operand has 33 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 32 states have internal predecessors, (53), 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) [2021-12-06 18:15:55,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:15:55,997 INFO L93 Difference]: Finished difference Result 61 states and 98 transitions. [2021-12-06 18:15:55,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 18:15:55,999 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 [2021-12-06 18:15:55,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:15:56,004 INFO L225 Difference]: With dead ends: 61 [2021-12-06 18:15:56,005 INFO L226 Difference]: Without dead ends: 27 [2021-12-06 18:15:56,007 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 [2021-12-06 18:15:56,010 INFO L933 BasicCegarLoop]: 38 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, 38 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 [2021-12-06 18:15:56,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:15:56,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-06 18:15:56,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-06 18:15:56,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 26 states have internal predecessors, (30), 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) [2021-12-06 18:15:56,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-12-06 18:15:56,032 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 6 [2021-12-06 18:15:56,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:15:56,033 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-12-06 18:15:56,033 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) [2021-12-06 18:15:56,033 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-12-06 18:15:56,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 18:15:56,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:15:56,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:15:56,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:15:56,034 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 18:15:56,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:15:56,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1806853233, now seen corresponding path program 1 times [2021-12-06 18:15:56,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:15:56,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154419981] [2021-12-06 18:15:56,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:15:56,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:15:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:15:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:15:56,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:15:56,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154419981] [2021-12-06 18:15:56,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154419981] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:15:56,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:15:56,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:15:56,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658356187] [2021-12-06 18:15:56,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:15:56,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:15:56,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:15:56,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:15:56,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:15:56,103 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:15:56,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:15:56,148 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-12-06 18:15:56,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:15:56,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-06 18:15:56,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:15:56,149 INFO L225 Difference]: With dead ends: 30 [2021-12-06 18:15:56,150 INFO L226 Difference]: Without dead ends: 28 [2021-12-06 18:15:56,150 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 [2021-12-06 18:15:56,152 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 35 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:15:56,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 28 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:15:56,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-06 18:15:56,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2021-12-06 18:15:56,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 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) [2021-12-06 18:15:56,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-12-06 18:15:56,158 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 7 [2021-12-06 18:15:56,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:15:56,158 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-12-06 18:15:56,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:15:56,158 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-12-06 18:15:56,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 18:15:56,159 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:15:56,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:15:56,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:15:56,160 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 18:15:56,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:15:56,161 INFO L85 PathProgramCache]: Analyzing trace with hash -856511048, now seen corresponding path program 1 times [2021-12-06 18:15:56,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:15:56,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761920904] [2021-12-06 18:15:56,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:15:56,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:15:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:15:56,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:15:56,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:15:56,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761920904] [2021-12-06 18:15:56,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761920904] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:15:56,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:15:56,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:15:56,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049020698] [2021-12-06 18:15:56,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:15:56,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:15:56,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:15:56,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:15:56,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:15:56,247 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:15:56,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:15:56,309 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2021-12-06 18:15:56,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:15:56,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-06 18:15:56,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:15:56,310 INFO L225 Difference]: With dead ends: 50 [2021-12-06 18:15:56,310 INFO L226 Difference]: Without dead ends: 48 [2021-12-06 18:15:56,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:15:56,311 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 27 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:15:56,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 67 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:15:56,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-12-06 18:15:56,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 32. [2021-12-06 18:15:56,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:15:56,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-12-06 18:15:56,316 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 10 [2021-12-06 18:15:56,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:15:56,317 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-12-06 18:15:56,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:15:56,317 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-12-06 18:15:56,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 18:15:56,317 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:15:56,317 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:15:56,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:15:56,318 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 18:15:56,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:15:56,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1594081566, now seen corresponding path program 1 times [2021-12-06 18:15:56,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:15:56,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129014576] [2021-12-06 18:15:56,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:15:56,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:15:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:15:56,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:15:56,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:15:56,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129014576] [2021-12-06 18:15:56,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129014576] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:15:56,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477912631] [2021-12-06 18:15:56,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:15:56,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:15:56,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:15:56,465 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:15:56,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:15:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:15:56,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-06 18:15:56,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:15:56,584 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 [2021-12-06 18:15:56,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 18:15:56,652 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 18:15:56,653 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 [2021-12-06 18:15:56,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:15:56,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-12-06 18:15:56,672 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 16 treesize of output 18 [2021-12-06 18:15:56,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:15:56,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:15:56,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-12-06 18:15:56,738 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-06 18:15:56,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 18:15:56,787 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 [2021-12-06 18:15:56,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:15:56,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:15:56,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:15:56,938 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-12-06 18:15:56,938 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2021-12-06 18:15:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:15:56,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477912631] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:15:56,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:15:56,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-12-06 18:15:56,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356463223] [2021-12-06 18:15:56,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:15:56,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 18:15:56,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:15:56,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 18:15:56,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:15:56,941 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:15:57,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:15:57,065 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2021-12-06 18:15:57,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:15:57,065 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-06 18:15:57,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:15:57,066 INFO L225 Difference]: With dead ends: 38 [2021-12-06 18:15:57,066 INFO L226 Difference]: Without dead ends: 36 [2021-12-06 18:15:57,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:15:57,067 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 47 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:15:57,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 68 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 57 Invalid, 0 Unknown, 14 Unchecked, 0.1s Time] [2021-12-06 18:15:57,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-06 18:15:57,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 23. [2021-12-06 18:15:57,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 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) [2021-12-06 18:15:57,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-12-06 18:15:57,071 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 13 [2021-12-06 18:15:57,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:15:57,071 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-12-06 18:15:57,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:15:57,072 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-12-06 18:15:57,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 18:15:57,072 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:15:57,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:15:57,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:15:57,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:15:57,274 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 18:15:57,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:15:57,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1689639521, now seen corresponding path program 1 times [2021-12-06 18:15:57,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:15:57,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177358948] [2021-12-06 18:15:57,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:15:57,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:15:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:15:57,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:15:57,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:15:57,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177358948] [2021-12-06 18:15:57,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177358948] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:15:57,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:15:57,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:15:57,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142354605] [2021-12-06 18:15:57,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:15:57,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:15:57,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:15:57,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:15:57,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:15:57,459 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:15:57,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:15:57,494 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2021-12-06 18:15:57,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:15:57,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-06 18:15:57,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:15:57,495 INFO L225 Difference]: With dead ends: 38 [2021-12-06 18:15:57,495 INFO L226 Difference]: Without dead ends: 26 [2021-12-06 18:15:57,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:15:57,496 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:15:57,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 58 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:15:57,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-06 18:15:57,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-12-06 18:15:57,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 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) [2021-12-06 18:15:57,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-12-06 18:15:57,499 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 14 [2021-12-06 18:15:57,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:15:57,499 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-12-06 18:15:57,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:15:57,500 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-12-06 18:15:57,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 18:15:57,500 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:15:57,500 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:15:57,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:15:57,500 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 18:15:57,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:15:57,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2084817261, now seen corresponding path program 1 times [2021-12-06 18:15:57,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:15:57,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722952026] [2021-12-06 18:15:57,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:15:57,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:15:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:15:57,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:15:57,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:15:57,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722952026] [2021-12-06 18:15:57,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722952026] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:15:57,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762292648] [2021-12-06 18:15:57,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:15:57,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:15:57,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:15:57,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:15:57,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:15:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:15:57,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 18:15:57,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:15:57,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:15:57,601 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 16 treesize of output 17 [2021-12-06 18:15:57,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:15:57,606 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 16 treesize of output 17 [2021-12-06 18:15:57,686 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 [2021-12-06 18:15:57,689 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 [2021-12-06 18:15:57,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:15:57,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:15:57,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:15:57,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762292648] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:15:57,746 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:15:57,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2021-12-06 18:15:57,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569028005] [2021-12-06 18:15:57,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:15:57,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:15:57,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:15:57,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:15:57,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:15:57,748 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:15:57,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:15:57,805 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2021-12-06 18:15:57,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:15:57,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-06 18:15:57,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:15:57,806 INFO L225 Difference]: With dead ends: 49 [2021-12-06 18:15:57,806 INFO L226 Difference]: Without dead ends: 27 [2021-12-06 18:15:57,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:15:57,807 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 12 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:15:57,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 90 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:15:57,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-06 18:15:57,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-06 18:15:57,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 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) [2021-12-06 18:15:57,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-12-06 18:15:57,810 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2021-12-06 18:15:57,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:15:57,810 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-12-06 18:15:57,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:15:57,810 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-12-06 18:15:57,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 18:15:57,811 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:15:57,811 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:15:57,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 18:15:58,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:15:58,014 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 18:15:58,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:15:58,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1088473273, now seen corresponding path program 1 times [2021-12-06 18:15:58,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:15:58,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867835156] [2021-12-06 18:15:58,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:15:58,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:15:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:15:58,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:15:58,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:15:58,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867835156] [2021-12-06 18:15:58,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867835156] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:15:58,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628149094] [2021-12-06 18:15:58,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:15:58,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:15:58,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:15:58,227 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:15:58,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 18:15:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:15:58,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-06 18:15:58,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:15:58,301 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 [2021-12-06 18:15:58,328 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-06 18:15:58,336 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:15:58,336 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 14 treesize of output 20 [2021-12-06 18:15:58,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2021-12-06 18:15:58,349 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-06 18:15:58,357 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:15:58,357 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 14 treesize of output 20 [2021-12-06 18:15:58,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2021-12-06 18:15:58,385 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 18:15:58,385 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 [2021-12-06 18:15:58,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:15:58,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:15:58,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 43 [2021-12-06 18:15:58,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 20 treesize of output 23 [2021-12-06 18:15:58,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:15:58,445 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-12-06 18:15:58,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 40 [2021-12-06 18:15:58,455 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-12-06 18:15:58,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 46 [2021-12-06 18:15:58,582 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 67 treesize of output 47 [2021-12-06 18:15:58,616 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:15:58,616 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 52 treesize of output 23 [2021-12-06 18:15:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:15:58,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:15:58,647 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:15:58,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2021-12-06 18:15:58,657 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_6 (Array Int Int)) (v_ArrVal_331 (Array Int Int)) (v_ArrVal_330 (Array Int Int)) (v_ArrVal_333 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_6 |c_ULTIMATE.start_main_~end~0#1.offset|))) (or (= .cse0 0) (not (= (select |c_#valid| .cse0) 0)) (not (= (select (let ((.cse1 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimArr_6) .cse0 v_ArrVal_330))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_331) .cse0 v_ArrVal_333) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) 0))))) is different from false [2021-12-06 18:15:58,670 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:15:58,671 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 65 [2021-12-06 18:15:58,675 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:15:58,675 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 49 [2021-12-06 18:15:58,718 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:15:58,718 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 7 new quantified variables, introduced 10 case distinctions, treesize of input 1632 treesize of output 1245 [2021-12-06 18:15:58,773 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:15:58,773 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 1839 treesize of output 1798 [2021-12-06 18:15:58,846 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:15:58,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1545 treesize of output 1485 [2021-12-06 18:15:58,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1699 treesize of output 1661 [2021-12-06 18:15:58,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1665 treesize of output 1643 [2021-12-06 18:15:58,984 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:15:58,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1655 treesize of output 1407 [2021-12-06 18:19:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:19:50,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628149094] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:19:50,821 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:19:50,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-12-06 18:19:50,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819244151] [2021-12-06 18:19:50,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:19:50,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 18:19:50,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:19:50,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 18:19:50,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=151, Unknown=1, NotChecked=24, Total=210 [2021-12-06 18:19:50,822 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 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) [2021-12-06 18:19:51,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:19:51,099 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2021-12-06 18:19:51,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 18:19:51,100 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 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 20 [2021-12-06 18:19:51,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:19:51,101 INFO L225 Difference]: With dead ends: 66 [2021-12-06 18:19:51,101 INFO L226 Difference]: Without dead ends: 64 [2021-12-06 18:19:51,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=379, Unknown=1, NotChecked=40, Total=506 [2021-12-06 18:19:51,102 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 60 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:19:51,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 170 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 157 Invalid, 0 Unknown, 68 Unchecked, 0.2s Time] [2021-12-06 18:19:51,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-06 18:19:51,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 42. [2021-12-06 18:19:51,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.2) internal successors, (48), 41 states have internal predecessors, (48), 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) [2021-12-06 18:19:51,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2021-12-06 18:19:51,107 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 20 [2021-12-06 18:19:51,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:19:51,107 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2021-12-06 18:19:51,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 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) [2021-12-06 18:19:51,107 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2021-12-06 18:19:51,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 18:19:51,107 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:19:51,108 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:19:51,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 18:19:51,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 18:19:51,309 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 18:19:51,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:19:51,310 INFO L85 PathProgramCache]: Analyzing trace with hash -67404919, now seen corresponding path program 1 times [2021-12-06 18:19:51,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:19:51,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131760976] [2021-12-06 18:19:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:19:51,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:19:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:19:51,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:19:51,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:19:51,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131760976] [2021-12-06 18:19:51,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131760976] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:19:51,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539312635] [2021-12-06 18:19:51,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:19:51,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:19:51,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:19:51,497 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:19:51,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 18:19:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:19:51,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-06 18:19:51,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:19:51,557 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 [2021-12-06 18:19:51,580 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-06 18:19:51,588 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:19:51,589 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 14 treesize of output 20 [2021-12-06 18:19:51,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2021-12-06 18:19:51,599 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-06 18:19:51,607 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:19:51,607 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 14 treesize of output 20 [2021-12-06 18:19:51,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2021-12-06 18:19:51,621 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:19:51,621 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 [2021-12-06 18:19:51,643 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:19:51,644 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 47 [2021-12-06 18:19:51,647 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 18 treesize of output 20 [2021-12-06 18:19:51,649 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 21 treesize of output 13 [2021-12-06 18:19:51,759 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 29 treesize of output 17 [2021-12-06 18:19:51,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2021-12-06 18:19:51,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:19:51,791 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:19:51,791 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 17 treesize of output 10 [2021-12-06 18:19:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:19:51,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:19:51,869 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 82 treesize of output 62 [2021-12-06 18:19:51,877 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_417 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_417) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) |c_ULTIMATE.start_main_~end~0#1.offset|)) (forall ((v_ArrVal_420 (Array Int Int))) (= |c_ULTIMATE.start_main_~end~0#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_420) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-12-06 18:19:51,886 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:19:51,886 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2021-12-06 18:19:51,889 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:19:51,889 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 38 [2021-12-06 18:19:51,895 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:19:51,895 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 50 treesize of output 53 [2021-12-06 18:19:51,900 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:19:51,900 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 65 treesize of output 68 [2021-12-06 18:19:51,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 37 treesize of output 35 [2021-12-06 18:19:51,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 35 treesize of output 33 [2021-12-06 18:19:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:19:51,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539312635] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:19:51,974 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:19:51,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 22 [2021-12-06 18:19:51,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914531822] [2021-12-06 18:19:51,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:19:51,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 18:19:51,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:19:51,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 18:19:51,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=364, Unknown=1, NotChecked=38, Total=462 [2021-12-06 18:19:51,975 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 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) [2021-12-06 18:19:52,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:19:52,311 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2021-12-06 18:19:52,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 18:19:52,312 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 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 20 [2021-12-06 18:19:52,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:19:52,312 INFO L225 Difference]: With dead ends: 70 [2021-12-06 18:19:52,312 INFO L226 Difference]: Without dead ends: 58 [2021-12-06 18:19:52,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=623, Unknown=1, NotChecked=52, Total=812 [2021-12-06 18:19:52,313 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 36 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:19:52,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 245 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 213 Invalid, 0 Unknown, 66 Unchecked, 0.2s Time] [2021-12-06 18:19:52,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-12-06 18:19:52,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2021-12-06 18:19:52,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 52 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) [2021-12-06 18:19:52,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2021-12-06 18:19:52,318 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 20 [2021-12-06 18:19:52,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:19:52,318 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2021-12-06 18:19:52,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 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) [2021-12-06 18:19:52,318 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2021-12-06 18:19:52,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 18:19:52,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:19:52,319 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] [2021-12-06 18:19:52,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-06 18:19:52,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:19:52,521 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-06 18:19:52,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:19:52,522 INFO L85 PathProgramCache]: Analyzing trace with hash 299800945, now seen corresponding path program 1 times [2021-12-06 18:19:52,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:19:52,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36206962] [2021-12-06 18:19:52,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:19:52,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:19:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:19:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:19:52,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:19:52,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36206962] [2021-12-06 18:19:52,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36206962] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:19:52,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685096345] [2021-12-06 18:19:52,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:19:52,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:19:52,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:19:52,674 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:19:52,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd399356-59dd-427a-acef-57f9f278efd0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 18:19:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:19:52,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-06 18:19:52,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:19:52,741 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 [2021-12-06 18:19:52,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-06 18:19:52,767 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:19:52,767 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 14 treesize of output 20 [2021-12-06 18:19:52,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2021-12-06 18:19:52,782 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 18:19:52,782 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 [2021-12-06 18:19:52,791 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-06 18:19:52,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:19:52,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:19:52,851 INFO L354 Elim1Store]: treesize reduction 31, result has 31.1 percent of original size [2021-12-06 18:19:52,851 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 51 [2021-12-06 18:19:52,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:19:52,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:19:52,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 28 [2021-12-06 18:19:52,862 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 12 treesize of output 11 [2021-12-06 18:19:52,865 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 21 treesize of output 17 [2021-12-06 18:19:52,875 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-06 18:19:52,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-12-06 18:19:52,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-06 18:19:53,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:19:53,109 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 18:19:53,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 46 [2021-12-06 18:19:53,115 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:19:53,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 22 [2021-12-06 18:19:53,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 18:19:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:19:53,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:19:53,211 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:19:53,211 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 95 [2021-12-06 18:19:53,215 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:19:53,215 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 88 [2021-12-06 18:19:53,217 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 259 treesize of output 181 [2021-12-06 18:19:53,242 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_16 (Array Int Int))) (or (not (= (select |c_#valid| (select v_arrayElimArr_16 |c_ULTIMATE.start_main_~end~0#1.offset|)) 0)) (and (forall ((v_arrayElimArr_15 (Array Int Int)) (v_ArrVal_551 (Array Int Int)) (v_ArrVal_550 (Array Int Int))) (= (select v_arrayElimArr_15 |c_ULTIMATE.start_main_~end~0#1.offset|) (let ((.cse1 (select v_arrayElimArr_16 |c_ULTIMATE.start_main_~end~0#1.offset|))) (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimArr_15) .cse1 v_ArrVal_551))) (select (select .cse0 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimArr_16) .cse1 v_ArrVal_550) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))))) (forall ((v_arrayElimArr_15 (Array Int Int)) (v_ArrVal_551 (Array Int Int)) (v_ArrVal_550 (Array Int Int))) (let ((.cse2 (select v_arrayElimArr_16 |c_ULTIMATE.start_main_~end~0#1.offset|))) (= .cse2 (select (let ((.cse3 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimArr_16) .cse2 v_ArrVal_550))) (select .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimArr_15) .cse2 v_ArrVal_551) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))))))) is different from false [2021-12-06 18:19:53,258 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:19:53,258 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 116 [2021-12-06 18:19:53,264 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:19:53,264 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 100 [2021-12-06 18:19:53,316 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:19:53,317 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 951 treesize of output 1034 [2021-12-06 18:19:53,347 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:19:53,348 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 1045 treesize of output 881 [2021-12-06 18:19:53,846 INFO L354 Elim1Store]: treesize reduction 270, result has 61.2 percent of original size [2021-12-06 18:19:53,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 6591 treesize of output 6308 [2021-12-06 18:19:54,076 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:19:54,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 5551 treesize of output 5073 [2021-12-06 18:19:54,337 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:19:54,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5063 treesize of output 4445 [2021-12-06 18:19:54,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4357 treesize of output 3885 [2021-12-06 18:19:54,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4163 treesize of output 4127 [2021-12-06 18:19:54,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4127 treesize of output 4109 [2021-12-06 18:19:55,032 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:19:55,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3883 treesize of output 3883