./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/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_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/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_cc02fcc5-a465-4ce4-b8fa-dad825720d68/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 58fb5e591c63ebc056bfb6417ddf45efba9827c2f78526eb3c8a68d018ffd43a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:19:15,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:19:15,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:19:15,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:19:15,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:19:15,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:19:15,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:19:15,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:19:15,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:19:15,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:19:15,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:19:15,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:19:15,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:19:15,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:19:15,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:19:15,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:19:15,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:19:15,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:19:15,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:19:15,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:19:15,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:19:15,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:19:15,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:19:15,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:19:15,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:19:15,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:19:15,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:19:15,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:19:15,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:19:15,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:19:15,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:19:15,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:19:15,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:19:15,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:19:15,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:19:15,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:19:15,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:19:15,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:19:15,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:19:15,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:19:15,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:19:15,175 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:19:15,199 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:19:15,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:19:15,200 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:19:15,200 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:19:15,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:19:15,201 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:19:15,201 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:19:15,201 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:19:15,202 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:19:15,202 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:19:15,202 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:19:15,202 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:19:15,203 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:19:15,203 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:19:15,203 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:19:15,203 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:19:15,204 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:19:15,204 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:19:15,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:19:15,205 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:19:15,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:19:15,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:19:15,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:19:15,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:19:15,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:19:15,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:19:15,206 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:19:15,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:19:15,207 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:19:15,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:19:15,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:19:15,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:19:15,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:19:15,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:19:15,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:19:15,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:19:15,209 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:19:15,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:19:15,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:19:15,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:19:15,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:19:15,210 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_cc02fcc5-a465-4ce4-b8fa-dad825720d68/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58fb5e591c63ebc056bfb6417ddf45efba9827c2f78526eb3c8a68d018ffd43a [2021-11-20 23:19:15,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:19:15,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:19:15,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:19:15,515 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:19:15,516 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:19:15,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i [2021-11-20 23:19:15,613 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/data/5a31d7611/c50328568c594dd092140a3cb03cfb21/FLAG7f064d4ac [2021-11-20 23:19:16,244 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:19:16,245 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i [2021-11-20 23:19:16,269 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/data/5a31d7611/c50328568c594dd092140a3cb03cfb21/FLAG7f064d4ac [2021-11-20 23:19:16,501 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/data/5a31d7611/c50328568c594dd092140a3cb03cfb21 [2021-11-20 23:19:16,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:19:16,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:19:16,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:19:16,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:19:16,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:19:16,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:19:16" (1/1) ... [2021-11-20 23:19:16,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c0fc022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:16, skipping insertion in model container [2021-11-20 23:19:16,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:19:16" (1/1) ... [2021-11-20 23:19:16,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:19:16,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:19:17,078 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_cc02fcc5-a465-4ce4-b8fa-dad825720d68/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[33021,33034] [2021-11-20 23:19:17,264 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_cc02fcc5-a465-4ce4-b8fa-dad825720d68/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[45234,45247] [2021-11-20 23:19:17,271 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:19:17,279 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:19:17,306 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_cc02fcc5-a465-4ce4-b8fa-dad825720d68/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[33021,33034] [2021-11-20 23:19:17,358 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_cc02fcc5-a465-4ce4-b8fa-dad825720d68/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[45234,45247] [2021-11-20 23:19:17,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:19:17,427 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:19:17,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:17 WrapperNode [2021-11-20 23:19:17,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:19:17,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:19:17,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:19:17,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:19:17,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:17" (1/1) ... [2021-11-20 23:19:17,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:17" (1/1) ... [2021-11-20 23:19:17,584 INFO L137 Inliner]: procedures = 177, calls = 297, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 996 [2021-11-20 23:19:17,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:19:17,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:19:17,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:19:17,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:19:17,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:17" (1/1) ... [2021-11-20 23:19:17,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:17" (1/1) ... [2021-11-20 23:19:17,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:17" (1/1) ... [2021-11-20 23:19:17,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:17" (1/1) ... [2021-11-20 23:19:17,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:17" (1/1) ... [2021-11-20 23:19:17,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:17" (1/1) ... [2021-11-20 23:19:17,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:17" (1/1) ... [2021-11-20 23:19:17,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:19:17,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:19:17,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:19:17,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:19:17,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:17" (1/1) ... [2021-11-20 23:19:17,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:19:17,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:19:17,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:19:17,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:19:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:19:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 23:19:17,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 23:19:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:19:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:19:17,861 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:19:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-11-20 23:19:17,861 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-11-20 23:19:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:19:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:19:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:19:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:19:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 23:19:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:19:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:19:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:19:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:19:17,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:19:18,188 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:19:18,189 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:19:19,200 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:19:19,618 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:19:19,618 INFO L301 CfgBuilder]: Removed 62 assume(true) statements. [2021-11-20 23:19:19,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:19:19 BoogieIcfgContainer [2021-11-20 23:19:19,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:19:19,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:19:19,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:19:19,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:19:19,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:19:16" (1/3) ... [2021-11-20 23:19:19,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b782222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:19:19, skipping insertion in model container [2021-11-20 23:19:19,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:17" (2/3) ... [2021-11-20 23:19:19,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b782222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:19:19, skipping insertion in model container [2021-11-20 23:19:19,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:19:19" (3/3) ... [2021-11-20 23:19:19,637 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test8-1.i [2021-11-20 23:19:19,645 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:19:19,646 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 23:19:19,707 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:19:19,714 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 [2021-11-20 23:19:19,714 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 23:19:19,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 122 states have (on average 1.7950819672131149) internal successors, (219), 139 states have internal predecessors, (219), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-20 23:19:19,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 23:19:19,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:19,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:19:19,744 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:19:19,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:19,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1967293167, now seen corresponding path program 1 times [2021-11-20 23:19:19,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:19,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602621526] [2021-11-20 23:19:19,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:19,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:19:19,932 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:19,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602621526] [2021-11-20 23:19:19,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602621526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:19,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:19,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:19:19,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604169421] [2021-11-20 23:19:19,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:19,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:19:19,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:19,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:19:19,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:19:19,973 INFO L87 Difference]: Start difference. First operand has 148 states, 122 states have (on average 1.7950819672131149) internal successors, (219), 139 states have internal predecessors, (219), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:20,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:20,364 INFO L93 Difference]: Finished difference Result 295 states and 534 transitions. [2021-11-20 23:19:20,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:19:20,368 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 23:19:20,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:20,384 INFO L225 Difference]: With dead ends: 295 [2021-11-20 23:19:20,384 INFO L226 Difference]: Without dead ends: 146 [2021-11-20 23:19:20,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:19:20,400 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:20,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:19:20,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-20 23:19:20,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-11-20 23:19:20,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 121 states have (on average 1.2727272727272727) internal successors, (154), 137 states have internal predecessors, (154), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-20 23:19:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 194 transitions. [2021-11-20 23:19:20,489 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 194 transitions. Word has length 8 [2021-11-20 23:19:20,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:20,489 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 194 transitions. [2021-11-20 23:19:20,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:20,490 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 194 transitions. [2021-11-20 23:19:20,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:19:20,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:20,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:19:20,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:19:20,492 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:19:20,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:20,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1767054038, now seen corresponding path program 1 times [2021-11-20 23:19:20,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:20,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793393951] [2021-11-20 23:19:20,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:20,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:19:20,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:20,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793393951] [2021-11-20 23:19:20,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793393951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:20,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:20,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:19:20,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316137075] [2021-11-20 23:19:20,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:20,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:19:20,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:20,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:19:20,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:19:20,618 INFO L87 Difference]: Start difference. First operand 146 states and 194 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:23,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:19:23,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:23,645 INFO L93 Difference]: Finished difference Result 293 states and 390 transitions. [2021-11-20 23:19:23,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:19:23,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 23:19:23,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:23,649 INFO L225 Difference]: With dead ends: 293 [2021-11-20 23:19:23,649 INFO L226 Difference]: Without dead ends: 202 [2021-11-20 23:19:23,650 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 [2021-11-20 23:19:23,652 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 60 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:23,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 488 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2021-11-20 23:19:23,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-20 23:19:23,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 148. [2021-11-20 23:19:23,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 123 states have (on average 1.2682926829268293) internal successors, (156), 139 states have internal predecessors, (156), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-20 23:19:23,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 196 transitions. [2021-11-20 23:19:23,673 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 196 transitions. Word has length 20 [2021-11-20 23:19:23,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:23,674 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 196 transitions. [2021-11-20 23:19:23,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:23,674 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 196 transitions. [2021-11-20 23:19:23,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 23:19:23,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:23,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:19:23,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:19:23,677 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:19:23,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:23,677 INFO L85 PathProgramCache]: Analyzing trace with hash -430271198, now seen corresponding path program 1 times [2021-11-20 23:19:23,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:23,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920858001] [2021-11-20 23:19:23,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:23,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:23,708 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:19:23,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22586915] [2021-11-20 23:19:23,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:23,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:19:23,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:19:23,712 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:19:23,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:19:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:23,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:19:23,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:19:24,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:19:24,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:19:24,143 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:24,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920858001] [2021-11-20 23:19:24,145 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:19:24,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22586915] [2021-11-20 23:19:24,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22586915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:24,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:24,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:19:24,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575538264] [2021-11-20 23:19:24,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:24,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:19:24,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:24,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:19:24,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:19:24,153 INFO L87 Difference]: Start difference. First operand 148 states and 196 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:25,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:25,045 INFO L93 Difference]: Finished difference Result 341 states and 444 transitions. [2021-11-20 23:19:25,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:19:25,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-20 23:19:25,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:25,050 INFO L225 Difference]: With dead ends: 341 [2021-11-20 23:19:25,050 INFO L226 Difference]: Without dead ends: 196 [2021-11-20 23:19:25,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:19:25,053 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 45 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:25,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 343 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 23:19:25,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-20 23:19:25,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 193. [2021-11-20 23:19:25,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 167 states have (on average 1.2275449101796407) internal successors, (205), 183 states have internal predecessors, (205), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-20 23:19:25,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 247 transitions. [2021-11-20 23:19:25,085 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 247 transitions. Word has length 32 [2021-11-20 23:19:25,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:25,086 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 247 transitions. [2021-11-20 23:19:25,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:25,086 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 247 transitions. [2021-11-20 23:19:25,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 23:19:25,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:25,088 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:19:25,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:19:25,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-20 23:19:25,312 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:19:25,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:25,313 INFO L85 PathProgramCache]: Analyzing trace with hash 308571032, now seen corresponding path program 1 times [2021-11-20 23:19:25,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:25,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370993504] [2021-11-20 23:19:25,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:25,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:25,332 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:19:25,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398691289] [2021-11-20 23:19:25,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:25,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:19:25,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:19:25,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:19:25,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:19:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:26,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:19:26,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:19:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:19:26,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:19:26,147 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:26,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370993504] [2021-11-20 23:19:26,147 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:19:26,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398691289] [2021-11-20 23:19:26,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398691289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:26,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:26,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:19:26,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302911436] [2021-11-20 23:19:26,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:26,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:19:26,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:26,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:19:26,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:19:26,150 INFO L87 Difference]: Start difference. First operand 193 states and 247 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:19:28,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:19:29,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:29,448 INFO L93 Difference]: Finished difference Result 372 states and 482 transitions. [2021-11-20 23:19:29,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:19:29,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2021-11-20 23:19:29,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:29,455 INFO L225 Difference]: With dead ends: 372 [2021-11-20 23:19:29,455 INFO L226 Difference]: Without dead ends: 195 [2021-11-20 23:19:29,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:19:29,457 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 1 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:29,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 518 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-20 23:19:29,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-20 23:19:29,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-20 23:19:29,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 168 states have (on average 1.2321428571428572) internal successors, (207), 185 states have internal predecessors, (207), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2021-11-20 23:19:29,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 250 transitions. [2021-11-20 23:19:29,498 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 250 transitions. Word has length 45 [2021-11-20 23:19:29,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:29,499 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 250 transitions. [2021-11-20 23:19:29,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:19:29,500 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 250 transitions. [2021-11-20 23:19:29,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-20 23:19:29,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:29,505 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] [2021-11-20 23:19:29,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:19:29,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:19:29,706 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:19:29,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:29,706 INFO L85 PathProgramCache]: Analyzing trace with hash -282668078, now seen corresponding path program 1 times [2021-11-20 23:19:29,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:29,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669555862] [2021-11-20 23:19:29,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:29,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:29,719 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:19:29,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648874086] [2021-11-20 23:19:29,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:29,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:19:29,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:19:29,721 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:19:29,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc02fcc5-a465-4ce4-b8fa-dad825720d68/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:19:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:31,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 23:19:31,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:19:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:19:31,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:19:31,456 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:19:31,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:31,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669555862] [2021-11-20 23:19:31,456 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:19:31,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648874086] [2021-11-20 23:19:31,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648874086] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:19:31,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [163276054] [2021-11-20 23:19:31,477 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2021-11-20 23:19:31,477 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:19:31,481 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:19:31,486 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:19:31,487 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:19:31,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:31,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-20 23:19:31,623 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 15 treesize of output 1 [2021-11-20 23:19:31,632 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 15 treesize of output 1 [2021-11-20 23:19:31,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:31,654 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-20 23:19:31,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-20 23:19:31,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:31,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:31,704 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:19:31,704 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 [2021-11-20 23:19:31,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:31,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:31,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:31,871 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-20 23:19:31,872 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 [2021-11-20 23:19:31,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:31,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2021-11-20 23:19:31,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:31,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:31,943 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:19:31,943 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 [2021-11-20 23:19:31,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:31,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:31,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:31,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:31,979 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 52 treesize of output 49 [2021-11-20 23:19:32,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:32,040 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 22 treesize of output 7 [2021-11-20 23:19:33,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,447 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 [2021-11-20 23:19:33,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,484 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 [2021-11-20 23:19:33,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,530 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 [2021-11-20 23:19:33,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,554 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 60 treesize of output 74 [2021-11-20 23:19:33,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,649 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 [2021-11-20 23:19:33,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 19 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 86 [2021-11-20 23:19:33,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-20 23:19:33,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:33,960 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:19:33,960 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 [2021-11-20 23:19:33,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:34,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:34,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:34,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:34,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:34,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:34,009 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 [2021-11-20 23:19:34,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:34,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:34,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:34,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:34,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:34,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:34,060 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 [2021-11-20 23:19:34,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:34,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:34,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:34,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:34,180 INFO L354 Elim1Store]: treesize reduction 194, result has 22.4 percent of original size [2021-11-20 23:19:34,180 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 127 treesize of output 163 [2021-11-20 23:19:34,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:34,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:34,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:34,250 INFO L354 Elim1Store]: treesize reduction 120, result has 14.9 percent of original size [2021-11-20 23:19:34,251 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 145 treesize of output 156 [2021-11-20 23:19:34,879 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 [2021-11-20 23:19:34,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:19:34,895 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 [2021-11-20 23:19:34,954 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-20 23:19:34,955 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 85 treesize of output 88 [2021-11-20 23:19:34,982 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-20 23:19:34,982 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 88 treesize of output 91 [2021-11-20 23:19:35,008 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-20 23:19:35,008 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 91 treesize of output 94 [2021-11-20 23:19:35,122 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 [2021-11-20 23:19:35,129 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 [2021-11-20 23:19:35,140 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 [2021-11-20 23:19:35,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,221 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 [2021-11-20 23:19:35,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,265 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 [2021-11-20 23:19:35,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,305 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 [2021-11-20 23:19:35,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,603 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 [2021-11-20 23:19:35,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,684 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 [2021-11-20 23:19:35,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:35,759 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 [2021-11-20 23:19:41,201 WARN L227 SmtUtils]: Spent 5.33s 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) [2021-11-20 23:19:41,202 INFO L354 Elim1Store]: treesize reduction 348, result has 15.7 percent of original size [2021-11-20 23:19:41,202 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 [2021-11-20 23:19:41,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:19:51,517 WARN L227 SmtUtils]: Spent 10.27s 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) [2021-11-20 23:19:51,518 INFO L354 Elim1Store]: treesize reduction 262, result has 32.6 percent of original size [2021-11-20 23:19:51,519 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 [2021-11-20 23:20:03,880 WARN L227 SmtUtils]: Spent 12.25s 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) [2021-11-20 23:20:03,881 INFO L354 Elim1Store]: treesize reduction 2750, result has 29.6 percent of original size [2021-11-20 23:20:03,882 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 [2021-11-20 23:20:04,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:04,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:05,294 INFO L354 Elim1Store]: treesize reduction 126, result has 17.1 percent of original size [2021-11-20 23:20:05,295 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 25954 treesize of output 25968 [2021-11-20 23:20:05,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:05,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:05,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:06,356 INFO L354 Elim1Store]: treesize reduction 204, result has 13.2 percent of original size [2021-11-20 23:20:06,357 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 25953 treesize of output 25968 [2021-11-20 23:20:07,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:07,943 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-20 23:20:07,943 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 2 case distinctions, treesize of input 50 treesize of output 32 [2021-11-20 23:20:08,367 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:20:08,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:09,118 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:20:09,119 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 51 treesize of output 61 [2021-11-20 23:20:11,371 INFO L244 Elim1Store]: Index analysis took 323 ms [2021-11-20 23:20:14,607 INFO L354 Elim1Store]: treesize reduction 122, result has 93.4 percent of original size [2021-11-20 23:20:14,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 8869 treesize of output 10151 [2021-11-20 23:20:17,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:17,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-20 23:20:19,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:19,282 INFO L244 Elim1Store]: Index analysis took 111 ms [2021-11-20 23:20:19,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:20,007 INFO L354 Elim1Store]: treesize reduction 20, result has 62.3 percent of original size [2021-11-20 23:20:20,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 67 treesize of output 77 [2021-11-20 23:20:21,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:20:21,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:21,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:21,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:21,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 42 [2021-11-20 23:20:21,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:21,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:21,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:20:21,525 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-20 23:20:21,736 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:20:31,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:31,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:31,450 INFO L190 IndexEqualityManager]: detected not equals via solver