./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0dff9798a0295b679f16f480562390718a9087ab219890b5f7fb9fb3739a540b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:19:31,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:19:31,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:19:31,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:19:31,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:19:31,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:19:31,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:19:31,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:19:31,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:19:31,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:19:31,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:19:31,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:19:31,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:19:31,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:19:31,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:19:31,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:19:31,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:19:31,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:19:31,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:19:31,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:19:31,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:19:31,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:19:31,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:19:31,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:19:31,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:19:31,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:19:31,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:19:31,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:19:31,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:19:31,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:19:31,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:19:31,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:19:31,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:19:31,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:19:31,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:19:31,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:19:31,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:19:31,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:19:31,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:19:31,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:19:31,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:19:31,290 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:19:31,334 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:19:31,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:19:31,335 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:19:31,335 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:19:31,342 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:19:31,342 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:19:31,342 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:19:31,342 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:19:31,343 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:19:31,343 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:19:31,344 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:19:31,344 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:19:31,344 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:19:31,345 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:19:31,345 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:19:31,345 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:19:31,345 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:19:31,345 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:19:31,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:19:31,347 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:19:31,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:19:31,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:19:31,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:19:31,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:19:31,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:19:31,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:19:31,350 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:19:31,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:19:31,350 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:19:31,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:19:31,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:19:31,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:19:31,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:19:31,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:19:31,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:19:31,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:19:31,352 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:19:31,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:19:31,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:19:31,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:19:31,353 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:19:31,353 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dff9798a0295b679f16f480562390718a9087ab219890b5f7fb9fb3739a540b [2021-11-21 00:19:31,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:19:31,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:19:31,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:19:31,637 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:19:31,638 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:19:31,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i [2021-11-21 00:19:31,703 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/data/776d4eacf/5875f93a913c4c718483c69b052b1aea/FLAG730469696 [2021-11-21 00:19:32,327 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:19:32,327 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i [2021-11-21 00:19:32,354 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/data/776d4eacf/5875f93a913c4c718483c69b052b1aea/FLAG730469696 [2021-11-21 00:19:32,698 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/data/776d4eacf/5875f93a913c4c718483c69b052b1aea [2021-11-21 00:19:32,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:19:32,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:19:32,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:19:32,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:19:32,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:19:32,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:19:32" (1/1) ... [2021-11-21 00:19:32,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61028199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:32, skipping insertion in model container [2021-11-21 00:19:32,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:19:32" (1/1) ... [2021-11-21 00:19:32,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:19:32,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:19:33,148 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_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[33021,33034] [2021-11-21 00:19:33,300 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_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44124,44137] [2021-11-21 00:19:33,301 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_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44245,44258] [2021-11-21 00:19:33,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:19:33,323 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:19:33,352 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_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[33021,33034] [2021-11-21 00:19:33,431 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_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44124,44137] [2021-11-21 00:19:33,432 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_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44245,44258] [2021-11-21 00:19:33,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:19:33,506 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:19:33,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:33 WrapperNode [2021-11-21 00:19:33,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:19:33,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:19:33,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:19:33,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:19:33,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:33" (1/1) ... [2021-11-21 00:19:33,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:33" (1/1) ... [2021-11-21 00:19:33,647 INFO L137 Inliner]: procedures = 176, calls = 328, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1151 [2021-11-21 00:19:33,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:19:33,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:19:33,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:19:33,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:19:33,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:33" (1/1) ... [2021-11-21 00:19:33,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:33" (1/1) ... [2021-11-21 00:19:33,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:33" (1/1) ... [2021-11-21 00:19:33,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:33" (1/1) ... [2021-11-21 00:19:33,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:33" (1/1) ... [2021-11-21 00:19:33,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:33" (1/1) ... [2021-11-21 00:19:33,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:33" (1/1) ... [2021-11-21 00:19:33,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:19:33,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:19:33,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:19:33,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:19:33,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:33" (1/1) ... [2021-11-21 00:19:33,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:19:33,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:19:33,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:19:33,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:19:33,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:19:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:19:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:19:33,872 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:19:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:19:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:19:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:19:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:19:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 00:19:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:19:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:19:33,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:19:33,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:19:33,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:19:34,170 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:19:34,173 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:19:35,337 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:19:35,718 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:19:35,719 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-21 00:19:35,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:19:35 BoogieIcfgContainer [2021-11-21 00:19:35,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:19:35,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:19:35,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:19:35,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:19:35,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:19:32" (1/3) ... [2021-11-21 00:19:35,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ac8a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:19:35, skipping insertion in model container [2021-11-21 00:19:35,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:33" (2/3) ... [2021-11-21 00:19:35,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ac8a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:19:35, skipping insertion in model container [2021-11-21 00:19:35,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:19:35" (3/3) ... [2021-11-21 00:19:35,738 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test7-2.i [2021-11-21 00:19:35,743 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:19:35,744 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 00:19:35,800 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:19:35,816 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:19:35,816 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 00:19:35,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 115 states have (on average 1.808695652173913) internal successors, (208), 117 states have internal predecessors, (208), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:19:35,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 00:19:35,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:35,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:19:35,846 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:19:35,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:35,851 INFO L85 PathProgramCache]: Analyzing trace with hash 2062520436, now seen corresponding path program 1 times [2021-11-21 00:19:35,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:35,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378627502] [2021-11-21 00:19:35,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:35,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:36,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:19:36,035 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:36,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378627502] [2021-11-21 00:19:36,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378627502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:19:36,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:19:36,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:19:36,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949703397] [2021-11-21 00:19:36,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:36,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 00:19:36,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:36,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 00:19:36,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:19:36,077 INFO L87 Difference]: Start difference. First operand has 122 states, 115 states have (on average 1.808695652173913) internal successors, (208), 117 states have internal predecessors, (208), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:19:36,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:36,950 INFO L93 Difference]: Finished difference Result 243 states and 427 transitions. [2021-11-21 00:19:36,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 00:19:36,965 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-21 00:19:36,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:36,973 INFO L225 Difference]: With dead ends: 243 [2021-11-21 00:19:36,973 INFO L226 Difference]: Without dead ends: 107 [2021-11-21 00:19:36,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:19:36,980 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:36,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 00:19:36,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-21 00:19:37,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-11-21 00:19:37,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 102 states have internal predecessors, (119), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:19:37,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 125 transitions. [2021-11-21 00:19:37,025 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 125 transitions. Word has length 7 [2021-11-21 00:19:37,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:37,026 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 125 transitions. [2021-11-21 00:19:37,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:19:37,026 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 125 transitions. [2021-11-21 00:19:37,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 00:19:37,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:37,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:19:37,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:19:37,028 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:19:37,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:37,028 INFO L85 PathProgramCache]: Analyzing trace with hash -75086937, now seen corresponding path program 1 times [2021-11-21 00:19:37,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:37,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533843139] [2021-11-21 00:19:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:37,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:19:37,094 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:37,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533843139] [2021-11-21 00:19:37,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533843139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:19:37,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:19:37,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:19:37,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175915121] [2021-11-21 00:19:37,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:37,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:19:37,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:37,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:19:37,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:19:37,097 INFO L87 Difference]: Start difference. First operand 107 states and 125 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:19:38,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:38,514 INFO L93 Difference]: Finished difference Result 219 states and 256 transitions. [2021-11-21 00:19:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:19:38,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-21 00:19:38,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:38,522 INFO L225 Difference]: With dead ends: 219 [2021-11-21 00:19:38,522 INFO L226 Difference]: Without dead ends: 165 [2021-11-21 00:19:38,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:19:38,525 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 63 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:38,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 285 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-21 00:19:38,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-21 00:19:38,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 109. [2021-11-21 00:19:38,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 103 states have (on average 1.174757281553398) internal successors, (121), 104 states have internal predecessors, (121), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:19:38,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2021-11-21 00:19:38,540 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 9 [2021-11-21 00:19:38,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:38,540 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2021-11-21 00:19:38,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:19:38,541 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2021-11-21 00:19:38,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-21 00:19:38,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:38,542 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:19:38,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:19:38,543 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:19:38,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:38,544 INFO L85 PathProgramCache]: Analyzing trace with hash -135765108, now seen corresponding path program 1 times [2021-11-21 00:19:38,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:38,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963176425] [2021-11-21 00:19:38,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:38,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:38,567 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:19:38,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462520585] [2021-11-21 00:19:38,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:38,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:19:38,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:19:38,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:19:38,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:19:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:38,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:19:38,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:19:38,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:19:38,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:19:38,998 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:38,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963176425] [2021-11-21 00:19:38,999 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:19:38,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462520585] [2021-11-21 00:19:38,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462520585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:19:38,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:19:38,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:19:39,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439574261] [2021-11-21 00:19:39,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:39,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:19:39,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:39,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:19:39,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:19:39,001 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:19:40,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:40,791 INFO L93 Difference]: Finished difference Result 265 states and 307 transitions. [2021-11-21 00:19:40,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:19:40,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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 33 [2021-11-21 00:19:40,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:40,806 INFO L225 Difference]: With dead ends: 265 [2021-11-21 00:19:40,807 INFO L226 Difference]: Without dead ends: 159 [2021-11-21 00:19:40,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:19:40,809 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 48 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:40,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 208 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-21 00:19:40,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-21 00:19:40,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 152. [2021-11-21 00:19:40,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 146 states have (on average 1.1643835616438356) internal successors, (170), 147 states have internal predecessors, (170), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:19:40,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 176 transitions. [2021-11-21 00:19:40,822 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 176 transitions. Word has length 33 [2021-11-21 00:19:40,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:40,822 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 176 transitions. [2021-11-21 00:19:40,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:19:40,823 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 176 transitions. [2021-11-21 00:19:40,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-21 00:19:40,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:40,824 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:19:40,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-21 00:19:41,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:19:41,025 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:19:41,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:41,025 INFO L85 PathProgramCache]: Analyzing trace with hash -2033909546, now seen corresponding path program 1 times [2021-11-21 00:19:41,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:41,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895720790] [2021-11-21 00:19:41,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:41,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:41,042 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:19:41,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1914529577] [2021-11-21 00:19:41,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:41,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:19:41,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:19:41,044 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:19:41,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:19:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:41,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:19:41,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:19:41,392 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 11 treesize of output 7 [2021-11-21 00:19:41,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-21 00:19:41,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 00:19:41,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:19:41,424 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:41,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895720790] [2021-11-21 00:19:41,425 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:19:41,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914529577] [2021-11-21 00:19:41,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914529577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:19:41,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:19:41,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:19:41,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289596133] [2021-11-21 00:19:41,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:41,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:19:41,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:41,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:19:41,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:19:41,428 INFO L87 Difference]: Start difference. First operand 152 states and 176 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:19:42,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:42,544 INFO L93 Difference]: Finished difference Result 201 states and 235 transitions. [2021-11-21 00:19:42,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:19:42,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2021-11-21 00:19:42,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:42,555 INFO L225 Difference]: With dead ends: 201 [2021-11-21 00:19:42,555 INFO L226 Difference]: Without dead ends: 197 [2021-11-21 00:19:42,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:19:42,557 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 58 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:42,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 283 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-21 00:19:42,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-21 00:19:42,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 154. [2021-11-21 00:19:42,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 148 states have (on average 1.162162162162162) internal successors, (172), 149 states have internal predecessors, (172), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:19:42,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 178 transitions. [2021-11-21 00:19:42,573 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 178 transitions. Word has length 46 [2021-11-21 00:19:42,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:42,574 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 178 transitions. [2021-11-21 00:19:42,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:19:42,575 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 178 transitions. [2021-11-21 00:19:42,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-21 00:19:42,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:42,577 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:19:42,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:19:42,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:19:42,792 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:19:42,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:42,792 INFO L85 PathProgramCache]: Analyzing trace with hash 340221349, now seen corresponding path program 1 times [2021-11-21 00:19:42,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:42,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196218621] [2021-11-21 00:19:42,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:42,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:42,808 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:19:42,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1162283158] [2021-11-21 00:19:42,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:42,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:19:42,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:19:42,810 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:19:42,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:19:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:43,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:19:43,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:19:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:19:43,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:19:43,237 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:43,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196218621] [2021-11-21 00:19:43,237 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:19:43,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162283158] [2021-11-21 00:19:43,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162283158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:19:43,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:19:43,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:19:43,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172059153] [2021-11-21 00:19:43,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:43,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:19:43,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:43,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:19:43,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:19:43,239 INFO L87 Difference]: Start difference. First operand 154 states and 178 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:19:43,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:43,760 INFO L93 Difference]: Finished difference Result 344 states and 400 transitions. [2021-11-21 00:19:43,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:19:43,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-11-21 00:19:43,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:43,766 INFO L225 Difference]: With dead ends: 344 [2021-11-21 00:19:43,766 INFO L226 Difference]: Without dead ends: 206 [2021-11-21 00:19:43,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:19:43,768 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 227 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:43,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 175 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:19:43,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-21 00:19:43,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 199. [2021-11-21 00:19:43,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 193 states have (on average 1.1709844559585492) internal successors, (226), 194 states have internal predecessors, (226), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:19:43,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 232 transitions. [2021-11-21 00:19:43,786 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 232 transitions. Word has length 57 [2021-11-21 00:19:43,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:43,786 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 232 transitions. [2021-11-21 00:19:43,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:19:43,787 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 232 transitions. [2021-11-21 00:19:43,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-21 00:19:43,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:43,789 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:19:43,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:19:44,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:19:44,016 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:19:44,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:44,016 INFO L85 PathProgramCache]: Analyzing trace with hash -105684312, now seen corresponding path program 1 times [2021-11-21 00:19:44,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:44,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904177324] [2021-11-21 00:19:44,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:44,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:44,029 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:19:44,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538698845] [2021-11-21 00:19:44,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:44,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:19:44,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:19:44,035 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:19:44,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:19:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:45,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:19:45,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:19:45,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:19:45,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:19:45,635 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:45,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904177324] [2021-11-21 00:19:45,635 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:19:45,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538698845] [2021-11-21 00:19:45,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538698845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:19:45,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:19:45,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:19:45,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610880899] [2021-11-21 00:19:45,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:45,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:19:45,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:45,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:19:45,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:19:45,638 INFO L87 Difference]: Start difference. First operand 199 states and 232 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:19:48,191 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:19:48,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:48,191 INFO L93 Difference]: Finished difference Result 381 states and 448 transitions. [2021-11-21 00:19:48,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:19:48,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 64 [2021-11-21 00:19:48,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:48,212 INFO L225 Difference]: With dead ends: 381 [2021-11-21 00:19:48,212 INFO L226 Difference]: Without dead ends: 201 [2021-11-21 00:19:48,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:19:48,214 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 1 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:48,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 317 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-21 00:19:48,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-21 00:19:48,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-11-21 00:19:48,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 194 states have (on average 1.175257731958763) internal successors, (228), 196 states have internal predecessors, (228), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-21 00:19:48,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 235 transitions. [2021-11-21 00:19:48,235 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 235 transitions. Word has length 64 [2021-11-21 00:19:48,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:48,235 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 235 transitions. [2021-11-21 00:19:48,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:19:48,236 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 235 transitions. [2021-11-21 00:19:48,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-21 00:19:48,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:48,239 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:19:48,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:19:48,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:19:48,467 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:19:48,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:48,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1390713772, now seen corresponding path program 1 times [2021-11-21 00:19:48,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:48,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850387907] [2021-11-21 00:19:48,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:48,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:48,484 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:19:48,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269790275] [2021-11-21 00:19:48,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:48,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:19:48,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:19:48,493 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:19:48,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b025b5dd-d3bd-4054-bfa6-d3fbae73637d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:20:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:20:10,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-21 00:20:10,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:20:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:20:10,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:20:10,894 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:20:10,894 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:20:10,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850387907] [2021-11-21 00:20:10,894 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:20:10,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269790275] [2021-11-21 00:20:10,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269790275] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:20:10,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [426260787] [2021-11-21 00:20:10,916 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-11-21 00:20:10,917 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:20:10,921 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:20:10,926 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:20:10,927 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:20:11,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:11,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 00:20:11,072 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 15 treesize of output 1 [2021-11-21 00:20:11,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:11,096 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:20:11,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:20:11,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:11,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 00:20:11,149 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 15 treesize of output 1 [2021-11-21 00:20:11,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:11,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-21 00:20:11,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:11,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 22 treesize of output 7 [2021-11-21 00:20:11,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:11,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:11,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:11,326 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-21 00:20:11,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 49 [2021-11-21 00:20:11,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:11,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:11,364 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:20:11,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 00:20:11,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:11,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:11,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:11,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:11,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 49 [2021-11-21 00:20:12,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-21 00:20:12,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 77 [2021-11-21 00:20:12,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 76 [2021-11-21 00:20:12,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-21 00:20:12,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 98 [2021-11-21 00:20:12,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 77 [2021-11-21 00:20:12,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,932 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 28 treesize of output 31 [2021-11-21 00:20:12,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:12,991 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 28 treesize of output 31 [2021-11-21 00:20:13,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,105 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:20:13,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 75 treesize of output 77 [2021-11-21 00:20:13,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 115 [2021-11-21 00:20:13,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,257 INFO L354 Elim1Store]: treesize reduction 120, result has 14.9 percent of original size [2021-11-21 00:20:13,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 127 treesize of output 138 [2021-11-21 00:20:13,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,351 INFO L354 Elim1Store]: treesize reduction 224, result has 10.4 percent of original size [2021-11-21 00:20:13,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 126 treesize of output 132 [2021-11-21 00:20:13,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:13,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 00:20:13,945 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 14 treesize of output 10 [2021-11-21 00:20:13,954 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 16 treesize of output 12 [2021-11-21 00:20:13,964 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 14 treesize of output 10 [2021-11-21 00:20:14,016 INFO L354 Elim1Store]: treesize reduction 34, result has 22.7 percent of original size [2021-11-21 00:20:14,016 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 98 treesize of output 97 [2021-11-21 00:20:14,040 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-21 00:20:14,041 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 94 treesize of output 93 [2021-11-21 00:20:14,063 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-21 00:20:14,064 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 90 treesize of output 89 [2021-11-21 00:20:14,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-21 00:20:14,124 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 16 treesize of output 12 [2021-11-21 00:20:14,133 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 14 treesize of output 10 [2021-11-21 00:20:14,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-21 00:20:14,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-11-21 00:20:14,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 26 [2021-11-21 00:20:14,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-11-21 00:20:14,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-21 00:20:14,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:14,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 26 [2021-11-21 00:20:22,597 WARN L227 SmtUtils]: Spent 7.77s on a formula simplification. DAG size of input: 66 DAG size of output: 32 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:20:22,598 INFO L354 Elim1Store]: treesize reduction 348, result has 15.7 percent of original size [2021-11-21 00:20:22,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 2847 treesize of output 2324 [2021-11-21 00:20:22,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:38,042 WARN L227 SmtUtils]: Spent 15.41s on a formula simplification. DAG size of input: 90 DAG size of output: 46 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:20:38,043 INFO L354 Elim1Store]: treesize reduction 262, result has 32.6 percent of original size [2021-11-21 00:20:38,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 2948 treesize of output 2666 [2021-11-21 00:20:51,524 WARN L227 SmtUtils]: Spent 13.33s on a formula simplification. DAG size of input: 251 DAG size of output: 142 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:20:51,526 INFO L354 Elim1Store]: treesize reduction 2750, result has 29.6 percent of original size [2021-11-21 00:20:51,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 2916 treesize of output 2686 [2021-11-21 00:20:52,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:52,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:52,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:53,276 INFO L354 Elim1Store]: treesize reduction 188, result has 20.0 percent of original size [2021-11-21 00:20:53,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 25954 treesize of output 25985 [2021-11-21 00:20:53,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:53,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:54,044 INFO L354 Elim1Store]: treesize reduction 126, result has 17.1 percent of original size [2021-11-21 00:20:54,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 25964 treesize of output 25978 [2021-11-21 00:20:56,790 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:20:57,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:57,205 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:20:57,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 50 treesize of output 32 [2021-11-21 00:20:57,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:57,888 INFO L354 Elim1Store]: treesize reduction 15, result has 48.3 percent of original size [2021-11-21 00:20:57,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 50 treesize of output 46 [2021-11-21 00:20:58,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:20:58,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:58,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:58,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:20:58,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:58,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:20:58,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:58,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:58,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:58,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:58,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:20:58,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:20:58,756 INFO L244 Elim1Store]: Index analysis took 130 ms [2021-11-21 00:20:58,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 1229 treesize of output 775 [2021-11-21 00:20:59,559 INFO L244 Elim1Store]: Index analysis took 307 ms [2021-11-21 00:20:59,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:21:02,140 INFO L354 Elim1Store]: treesize reduction 114, result has 93.8 percent of original size [2021-11-21 00:21:02,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 2568 treesize of output 3842 [2021-11-21 00:21:11,402 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-11-21 00:21:11,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 840 treesize of output 848 [2021-11-21 00:21:11,969 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:21:12,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:21:12,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:21:12,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:21:12,485 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:21:12,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 42 [2021-11-21 00:21:12,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:21:12,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:21:12,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:21:13,275 INFO L354 Elim1Store]: treesize reduction 20, result has 53.5 percent of original size [2021-11-21 00:21:13,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 67 treesize of output 67 [2021-11-21 00:21:14,469 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:21:18,665 INFO L190 IndexEqualityManager]: detected not equals via solver