./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_append_unequal.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_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/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_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_append_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/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_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/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 8e4e2611155a39995b0fc64ec45d64e4c98f789d2737326ee819380629347be0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:35:10,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:35:10,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:35:10,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:35:10,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:35:10,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:35:10,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:35:10,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:35:10,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:35:10,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:35:10,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:35:10,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:35:10,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:35:10,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:35:10,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:35:10,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:35:10,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:35:10,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:35:10,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:35:10,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:35:10,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:35:10,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:35:10,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:35:10,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:35:10,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:35:10,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:35:10,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:35:10,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:35:10,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:35:10,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:35:10,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:35:10,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:35:10,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:35:10,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:35:10,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:35:10,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:35:10,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:35:10,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:35:10,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:35:10,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:35:10,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:35:10,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:35:10,339 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:35:10,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:35:10,341 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:35:10,341 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:35:10,342 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:35:10,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:35:10,350 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:35:10,351 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:35:10,351 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:35:10,351 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:35:10,352 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:35:10,353 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:35:10,353 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:35:10,353 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:35:10,354 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:35:10,354 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:35:10,354 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:35:10,355 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:35:10,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:35:10,356 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:35:10,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:35:10,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:35:10,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:35:10,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:35:10,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:35:10,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:35:10,360 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:35:10,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:35:10,360 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:35:10,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:35:10,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:35:10,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:35:10,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:35:10,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:35:10,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:35:10,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:35:10,363 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:35:10,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:35:10,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:35:10,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:35:10,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:35:10,364 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_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e4e2611155a39995b0fc64ec45d64e4c98f789d2737326ee819380629347be0 [2021-11-21 01:35:10,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:35:10,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:35:10,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:35:10,692 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:35:10,693 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:35:10,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/list-simple/dll2n_append_unequal.i [2021-11-21 01:35:10,771 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/data/54eb996ac/37b1dbc1e69945a39df61da75b889a74/FLAGb1b65e6b7 [2021-11-21 01:35:11,408 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:35:11,411 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/sv-benchmarks/c/list-simple/dll2n_append_unequal.i [2021-11-21 01:35:11,439 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/data/54eb996ac/37b1dbc1e69945a39df61da75b889a74/FLAGb1b65e6b7 [2021-11-21 01:35:11,707 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/data/54eb996ac/37b1dbc1e69945a39df61da75b889a74 [2021-11-21 01:35:11,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:35:11,712 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:35:11,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:35:11,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:35:11,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:35:11,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:35:11" (1/1) ... [2021-11-21 01:35:11,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a807495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:11, skipping insertion in model container [2021-11-21 01:35:11,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:35:11" (1/1) ... [2021-11-21 01:35:11,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:35:11,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:35:12,203 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_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/sv-benchmarks/c/list-simple/dll2n_append_unequal.i[24457,24470] [2021-11-21 01:35:12,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:35:12,229 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:35:12,317 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_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/sv-benchmarks/c/list-simple/dll2n_append_unequal.i[24457,24470] [2021-11-21 01:35:12,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:35:12,359 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:35:12,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:12 WrapperNode [2021-11-21 01:35:12,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:35:12,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:35:12,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:35:12,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:35:12,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:12" (1/1) ... [2021-11-21 01:35:12,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:12" (1/1) ... [2021-11-21 01:35:12,436 INFO L137 Inliner]: procedures = 127, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 138 [2021-11-21 01:35:12,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:35:12,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:35:12,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:35:12,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:35:12,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:12" (1/1) ... [2021-11-21 01:35:12,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:12" (1/1) ... [2021-11-21 01:35:12,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:12" (1/1) ... [2021-11-21 01:35:12,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:12" (1/1) ... [2021-11-21 01:35:12,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:12" (1/1) ... [2021-11-21 01:35:12,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:12" (1/1) ... [2021-11-21 01:35:12,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:12" (1/1) ... [2021-11-21 01:35:12,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:35:12,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:35:12,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:35:12,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:35:12,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:12" (1/1) ... [2021-11-21 01:35:12,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:35:12,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:35:12,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:35:12,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:35:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:35:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:35:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-11-21 01:35:12,592 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-11-21 01:35:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:35:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:35:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:35:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:35:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:35:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:35:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:35:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:35:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:35:12,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:35:12,792 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:35:12,794 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:35:13,099 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:35:13,155 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:35:13,155 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-21 01:35:13,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:35:13 BoogieIcfgContainer [2021-11-21 01:35:13,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:35:13,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:35:13,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:35:13,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:35:13,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:35:11" (1/3) ... [2021-11-21 01:35:13,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a290cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:35:13, skipping insertion in model container [2021-11-21 01:35:13,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:12" (2/3) ... [2021-11-21 01:35:13,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a290cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:35:13, skipping insertion in model container [2021-11-21 01:35:13,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:35:13" (3/3) ... [2021-11-21 01:35:13,178 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_append_unequal.i [2021-11-21 01:35:13,184 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:35:13,189 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:35:13,304 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:35:13,317 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:35:13,328 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:35:13,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:35:13,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:35:13,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:13,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:13,377 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:35:13,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:13,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1645558503, now seen corresponding path program 1 times [2021-11-21 01:35:13,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:13,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551500349] [2021-11-21 01:35:13,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:13,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:13,689 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:13,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551500349] [2021-11-21 01:35:13,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551500349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:13,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:13,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:35:13,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340958278] [2021-11-21 01:35:13,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:13,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:35:13,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:13,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:35:13,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:13,742 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 01:35:13,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:13,829 INFO L93 Difference]: Finished difference Result 53 states and 77 transitions. [2021-11-21 01:35:13,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:35:13,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-21 01:35:13,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:13,842 INFO L225 Difference]: With dead ends: 53 [2021-11-21 01:35:13,842 INFO L226 Difference]: Without dead ends: 26 [2021-11-21 01:35:13,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:13,851 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:13,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 59 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:35:13,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-21 01:35:13,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2021-11-21 01:35:13,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:35:13,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2021-11-21 01:35:13,912 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 12 [2021-11-21 01:35:13,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:13,912 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2021-11-21 01:35:13,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 01:35:13,915 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2021-11-21 01:35:13,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-21 01:35:13,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:13,917 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:13,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:35:13,919 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:35:13,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:13,922 INFO L85 PathProgramCache]: Analyzing trace with hash 915268386, now seen corresponding path program 1 times [2021-11-21 01:35:13,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:13,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073868189] [2021-11-21 01:35:13,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:13,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 01:35:14,096 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:14,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073868189] [2021-11-21 01:35:14,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073868189] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:35:14,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971651905] [2021-11-21 01:35:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:14,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:35:14,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:35:14,101 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:35:14,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:35:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:14,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:35:14,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:35:14,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:14,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:35:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 01:35:14,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971651905] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:35:14,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [463562735] [2021-11-21 01:35:14,536 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 01:35:14,536 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:35:14,542 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:35:14,548 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:35:14,549 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:35:14,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:14,828 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:35:14,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:35:14,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:14,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:35:15,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:35:15,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:35:15,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:15,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:15,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:15,353 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 25 treesize of output 19 [2021-11-21 01:35:15,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:15,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:15,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:15,417 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 21 treesize of output 26 [2021-11-21 01:35:15,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:15,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:15,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:15,437 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 25 treesize of output 19 [2021-11-21 01:35:15,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:15,557 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:35:15,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-11-21 01:35:15,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:15,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:15,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 13 [2021-11-21 01:35:15,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:15,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:15,875 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:35:15,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 13 [2021-11-21 01:35:15,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:15,984 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:35:15,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-11-21 01:35:16,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:16,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:16,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 408 treesize of output 385 [2021-11-21 01:35:16,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:16,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:16,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:16,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:16,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:16,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 385 treesize of output 368 [2021-11-21 01:35:16,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:16,502 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-21 01:35:16,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 374 treesize of output 355 [2021-11-21 01:35:16,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:16,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:16,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:16,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:16,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:16,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 421 treesize of output 309 [2021-11-21 01:35:16,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:16,595 INFO L354 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2021-11-21 01:35:16,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 262 treesize of output 255 [2021-11-21 01:35:16,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:16,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 19 [2021-11-21 01:35:16,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:16,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 30 [2021-11-21 01:35:17,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:35:17,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:17,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2021-11-21 01:35:17,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:17,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2021-11-21 01:35:17,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:35:17,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:35:17,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:35:17,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:35:17,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:35:17,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:17,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2021-11-21 01:35:18,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:18,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2021-11-21 01:35:18,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:18,247 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-21 01:35:18,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 185 treesize of output 177 [2021-11-21 01:35:18,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:18,303 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-21 01:35:18,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 213 treesize of output 199 [2021-11-21 01:35:18,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:18,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 226 [2021-11-21 01:35:18,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:18,400 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 27 treesize of output 17 [2021-11-21 01:35:18,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:18,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-21 01:35:18,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:18,633 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 27 treesize of output 17 [2021-11-21 01:35:18,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:18,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:18,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:18,745 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:35:18,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 41 [2021-11-21 01:35:18,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:18,857 INFO L354 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2021-11-21 01:35:18,858 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 31 [2021-11-21 01:35:19,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:35:19,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-21 01:35:19,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-21 01:35:19,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:35:19,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-21 01:35:19,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-21 01:35:19,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,930 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-21 01:35:19,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 185 treesize of output 177 [2021-11-21 01:35:19,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:20,006 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-21 01:35:20,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 213 treesize of output 205 [2021-11-21 01:35:20,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:20,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 226 [2021-11-21 01:35:20,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:20,173 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 27 treesize of output 17 [2021-11-21 01:35:20,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:20,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-21 01:35:20,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:20,410 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 27 treesize of output 17 [2021-11-21 01:35:20,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:20,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:20,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:20,500 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:35:20,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 41 [2021-11-21 01:35:20,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:20,632 INFO L354 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2021-11-21 01:35:20,632 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 31 [2021-11-21 01:35:21,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:35:21,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:35:21,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:35:21,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:35:22,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:22,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:22,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:22,135 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:35:22,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 35 [2021-11-21 01:35:22,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:22,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:22,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:22,192 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:35:22,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 35 [2021-11-21 01:35:22,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:22,278 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-21 01:35:22,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2021-11-21 01:35:24,148 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 50 for LOIs [2021-11-21 01:35:26,036 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:35:31,389 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:35:31,390 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:35:31,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-11-21 01:35:31,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181480908] [2021-11-21 01:35:31,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:35:31,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:35:31,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:31,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:35:31,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:35:31,393 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-21 01:35:31,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:31,452 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2021-11-21 01:35:31,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:35:31,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 18 [2021-11-21 01:35:31,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:31,454 INFO L225 Difference]: With dead ends: 46 [2021-11-21 01:35:31,454 INFO L226 Difference]: Without dead ends: 27 [2021-11-21 01:35:31,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:35:31,456 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 2 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:31,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 74 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:35:31,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-21 01:35:31,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-21 01:35:31,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:35:31,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-11-21 01:35:31,463 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 18 [2021-11-21 01:35:31,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:31,464 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-11-21 01:35:31,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-21 01:35:31,464 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-11-21 01:35:31,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-21 01:35:31,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:31,466 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:31,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-21 01:35:31,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:35:31,676 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:35:31,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:31,676 INFO L85 PathProgramCache]: Analyzing trace with hash 418919197, now seen corresponding path program 2 times [2021-11-21 01:35:31,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:31,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422740825] [2021-11-21 01:35:31,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:31,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:31,977 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 01:35:31,977 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:31,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422740825] [2021-11-21 01:35:31,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422740825] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:35:31,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950615339] [2021-11-21 01:35:31,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:35:31,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:35:31,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:35:31,981 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:35:31,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:35:32,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-21 01:35:32,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:35:32,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-21 01:35:32,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:35:32,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-11-21 01:35:34,316 WARN L860 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.offset| Int) (|node_create_~temp~0#1.base| Int)) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| (store (store (store (select |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base|) (+ |node_create_~temp~0#1.offset| 4) 0) (+ |node_create_~temp~0#1.offset| 8) 0) |node_create_~temp~0#1.offset| (select (select |c_#memory_$Pointer$.base| |node_create_~temp~0#1.base|) |node_create_~temp~0#1.offset|))) |c_#memory_$Pointer$.base|))) is different from true [2021-11-21 01:35:34,451 INFO L354 Elim1Store]: treesize reduction 187, result has 12.2 percent of original size [2021-11-21 01:35:34,452 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 3 case distinctions, treesize of input 39 treesize of output 35 [2021-11-21 01:35:34,621 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-11-21 01:35:34,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 19 [2021-11-21 01:35:34,681 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2021-11-21 01:35:34,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:35:36,894 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_node_create_~temp~0#1.offset_17| Int) (|v_node_create_~temp~0#1.base_17| Int) (v_DerPreprocessor_9 Int)) (or (<= |c_#StackHeapBarrier| |v_node_create_~temp~0#1.base_17|) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_node_create_~temp~0#1.base_17| (store (store (store (select |c_#memory_$Pointer$.base| |v_node_create_~temp~0#1.base_17|) (+ |v_node_create_~temp~0#1.offset_17| 4) 0) (+ |v_node_create_~temp~0#1.offset_17| 8) 0) |v_node_create_~temp~0#1.offset_17| v_DerPreprocessor_9)) |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|) 0)))) is different from false [2021-11-21 01:35:36,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950615339] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:35:36,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1853029308] [2021-11-21 01:35:36,902 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 01:35:36,902 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:35:36,902 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:35:36,903 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:35:36,903 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:35:36,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:37,006 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:35:37,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:35:37,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:37,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:35:37,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:35:37,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:35:37,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:37,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:37,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:37,548 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 21 treesize of output 26 [2021-11-21 01:35:37,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:37,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:37,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:37,602 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 25 treesize of output 19 [2021-11-21 01:35:37,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:37,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:37,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:37,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-21 01:35:37,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:37,745 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:35:37,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-11-21 01:35:37,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:37,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:37,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 13 [2021-11-21 01:35:38,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:38,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:38,111 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:35:38,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 13 [2021-11-21 01:35:38,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:38,152 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:35:38,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-11-21 01:35:38,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:38,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:38,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:38,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 32 [2021-11-21 01:35:38,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:38,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:38,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:38,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 32 [2021-11-21 01:35:38,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:38,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2021-11-21 01:35:38,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:35:39,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:35:39,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:39,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2021-11-21 01:35:39,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:35:39,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:39,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2021-11-21 01:35:39,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:35:39,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:35:39,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:35:39,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:39,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2021-11-21 01:35:39,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:39,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2021-11-21 01:35:39,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:39,808 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-21 01:35:39,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 185 treesize of output 177 [2021-11-21 01:35:39,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:39,940 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-21 01:35:39,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 213 treesize of output 199 [2021-11-21 01:35:39,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:39,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 226 [2021-11-21 01:35:40,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:40,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-21 01:35:40,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:40,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:40,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:40,332 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:35:40,333 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 2 case distinctions, treesize of input 48 treesize of output 20 [2021-11-21 01:35:40,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:40,460 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 79 treesize of output 51 [2021-11-21 01:35:40,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:40,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:40,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:40,525 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:35:40,526 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 2 case distinctions, treesize of input 57 treesize of output 29 [2021-11-21 01:35:40,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:40,644 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 87 treesize of output 53 [2021-11-21 01:35:41,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-21 01:35:41,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:35:41,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-21 01:35:41,539 INFO L354 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2021-11-21 01:35:41,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 40 [2021-11-21 01:35:41,553 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-21 01:35:41,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 15 [2021-11-21 01:35:41,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:35:41,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:41,891 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-21 01:35:41,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 185 treesize of output 177 [2021-11-21 01:35:41,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:41,972 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-21 01:35:41,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 213 treesize of output 199 [2021-11-21 01:35:42,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:42,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 226 [2021-11-21 01:35:42,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:42,130 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 27 treesize of output 17 [2021-11-21 01:35:42,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:42,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-21 01:35:42,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:42,487 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 27 treesize of output 17 [2021-11-21 01:35:42,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:42,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:42,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:42,683 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:35:42,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 41 [2021-11-21 01:35:42,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:42,887 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-11-21 01:35:42,887 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 31 [2021-11-21 01:35:43,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:35:43,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:35:44,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:35:44,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:35:45,167 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 [2021-11-21 01:35:45,193 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 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-21 01:35:45,263 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 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-21 01:35:47,566 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 52 for LOIs [2021-11-21 01:35:50,386 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:35:58,288 WARN L227 SmtUtils]: Spent 6.29s on a formula simplification that was a NOOP. DAG size: 92 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:36:00,403 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:36:00,403 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:36:00,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2021-11-21 01:36:00,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006174397] [2021-11-21 01:36:00,404 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:36:00,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-21 01:36:00,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:36:00,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-21 01:36:00,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=896, Unknown=2, NotChecked=122, Total=1122 [2021-11-21 01:36:00,407 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 20 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-21 01:36:05,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:36:05,223 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2021-11-21 01:36:05,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 01:36:05,224 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 24 [2021-11-21 01:36:05,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:36:05,225 INFO L225 Difference]: With dead ends: 37 [2021-11-21 01:36:05,225 INFO L226 Difference]: Without dead ends: 27 [2021-11-21 01:36:05,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=130, Invalid=1136, Unknown=2, NotChecked=138, Total=1406 [2021-11-21 01:36:05,227 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:36:05,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 244 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 116 Invalid, 0 Unknown, 43 Unchecked, 0.3s Time] [2021-11-21 01:36:05,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-21 01:36:05,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-21 01:36:05,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:36:05,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2021-11-21 01:36:05,237 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 24 [2021-11-21 01:36:05,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:36:05,237 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2021-11-21 01:36:05,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-21 01:36:05,238 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2021-11-21 01:36:05,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-21 01:36:05,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:36:05,239 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:36:05,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:36:05,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:36:05,444 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:36:05,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:05,444 INFO L85 PathProgramCache]: Analyzing trace with hash 66836649, now seen corresponding path program 1 times [2021-11-21 01:36:05,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:36:05,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962273054] [2021-11-21 01:36:05,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:05,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:36:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:36:06,631 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:36:06,632 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:36:06,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962273054] [2021-11-21 01:36:06,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962273054] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:36:06,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373181203] [2021-11-21 01:36:06,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:06,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:36:06,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:36:06,634 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:36:06,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:36:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:36:06,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-21 01:36:06,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:36:06,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:36:07,161 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:36:07,161 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 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-21 01:36:07,348 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-21 01:36:07,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 84 [2021-11-21 01:36:07,390 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-21 01:36:07,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 53 [2021-11-21 01:36:07,851 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-21 01:36:07,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 171 treesize of output 78 [2021-11-21 01:36:07,867 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-21 01:36:07,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 44 [2021-11-21 01:36:07,882 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:36:07,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-21 01:36:12,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:12,546 INFO L354 Elim1Store]: treesize reduction 412, result has 8.6 percent of original size [2021-11-21 01:36:12,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 223 treesize of output 150 [2021-11-21 01:36:12,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:12,758 INFO L354 Elim1Store]: treesize reduction 384, result has 8.8 percent of original size [2021-11-21 01:36:12,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 216 treesize of output 189 [2021-11-21 01:36:12,821 INFO L354 Elim1Store]: treesize reduction 36, result has 44.6 percent of original size [2021-11-21 01:36:12,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 213 treesize of output 215 [2021-11-21 01:36:14,777 INFO L354 Elim1Store]: treesize reduction 658, result has 11.4 percent of original size [2021-11-21 01:36:14,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 286 treesize of output 224 [2021-11-21 01:36:15,180 INFO L354 Elim1Store]: treesize reduction 580, result has 16.5 percent of original size [2021-11-21 01:36:15,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 257 treesize of output 284 [2021-11-21 01:37:20,695 INFO L354 Elim1Store]: treesize reduction 416, result has 21.7 percent of original size [2021-11-21 01:37:20,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 328 treesize of output 322 [2021-11-21 01:37:20,926 INFO L354 Elim1Store]: treesize reduction 228, result has 21.1 percent of original size [2021-11-21 01:37:20,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 301 treesize of output 259 [2021-11-21 01:37:22,038 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:22,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:24,163 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_append_~new_last~0#1.offset| Int)) (not (= (let ((.cse2 (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8)) (.cse3 (+ |c_ULTIMATE.start_dll_append_~last~0#1.offset| 4))) (select (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse3 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|)))) (store .cse1 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse1 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse2 |c_ULTIMATE.start_dll_append_~last~0#1.base|))))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse3 |ULTIMATE.start_dll_append_~new_last~0#1.offset|)))) (store .cse4 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse2 |c_ULTIMATE.start_dll_append_~last~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) 0))) is different from false [2021-11-21 01:37:38,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373181203] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:37:38,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [145699908] [2021-11-21 01:37:38,261 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-21 01:37:38,261 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:37:38,262 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:37:38,262 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:37:38,262 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:37:38,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:38,350 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:37:38,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:37:38,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:38,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:37:38,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:37:38,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:37:38,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:38,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:38,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:38,909 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 21 treesize of output 26 [2021-11-21 01:37:38,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:38,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:38,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:38,927 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 25 treesize of output 19 [2021-11-21 01:37:38,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:38,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:38,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:38,965 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 25 treesize of output 19 [2021-11-21 01:37:39,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:39,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:39,082 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:37:39,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 13 [2021-11-21 01:37:39,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:39,119 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:37:39,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-11-21 01:37:39,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:39,458 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:37:39,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-11-21 01:37:39,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:39,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:39,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 13 [2021-11-21 01:37:39,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:39,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:39,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 408 treesize of output 385 [2021-11-21 01:37:39,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:39,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:39,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:39,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:39,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:39,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 385 treesize of output 368 [2021-11-21 01:37:39,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:39,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:39,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:39,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:39,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:39,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 374 treesize of output 262 [2021-11-21 01:37:39,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:39,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 122 [2021-11-21 01:37:39,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:39,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 109 [2021-11-21 01:37:40,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:40,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2021-11-21 01:37:40,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:37:40,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:40,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2021-11-21 01:37:40,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:37:40,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:37:41,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:37:41,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:37:41,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:41,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2021-11-21 01:37:41,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:37:41,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:41,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2021-11-21 01:37:41,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:41,835 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-21 01:37:41,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 185 treesize of output 177 [2021-11-21 01:37:41,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:41,972 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-21 01:37:41,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 213 treesize of output 199 [2021-11-21 01:37:42,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:42,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 226 [2021-11-21 01:37:42,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:42,121 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 27 treesize of output 17 [2021-11-21 01:37:42,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:42,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-21 01:37:42,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:42,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:42,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:42,594 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:37:42,594 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 2 case distinctions, treesize of input 48 treesize of output 20 [2021-11-21 01:37:42,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:42,809 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 79 treesize of output 51 [2021-11-21 01:37:42,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:42,975 INFO L354 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2021-11-21 01:37:42,976 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 31 [2021-11-21 01:37:43,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:37:43,723 INFO L354 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2021-11-21 01:37:43,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 40 [2021-11-21 01:37:43,741 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-21 01:37:43,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 15 [2021-11-21 01:37:44,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-21 01:37:44,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:37:44,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-21 01:37:44,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:44,439 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-21 01:37:44,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 185 treesize of output 177 [2021-11-21 01:37:44,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:44,564 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-21 01:37:44,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 213 treesize of output 199 [2021-11-21 01:37:44,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:44,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 226 [2021-11-21 01:37:44,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:44,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-21 01:37:44,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:44,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:44,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:44,888 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:37:44,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 20 [2021-11-21 01:37:45,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:45,014 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 79 treesize of output 51 [2021-11-21 01:37:45,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:45,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:45,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:45,174 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:37:45,175 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 2 case distinctions, treesize of input 48 treesize of output 20 [2021-11-21 01:37:45,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:45,339 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 87 treesize of output 53 [2021-11-21 01:37:46,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:37:46,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:37:46,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:37:46,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:37:48,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:48,852 INFO L354 Elim1Store]: treesize reduction 48, result has 43.5 percent of original size [2021-11-21 01:37:48,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 40 [2021-11-21 01:37:49,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:49,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:49,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:49,247 INFO L354 Elim1Store]: treesize reduction 126, result has 20.3 percent of original size [2021-11-21 01:37:49,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 case distinctions, treesize of input 144 treesize of output 129 [2021-11-21 01:37:49,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:49,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:49,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:49,507 INFO L354 Elim1Store]: treesize reduction 124, result has 21.5 percent of original size [2021-11-21 01:37:49,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 case distinctions, treesize of input 117 treesize of output 104 [2021-11-21 01:37:50,810 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 50 for LOIs [2021-11-21 01:37:53,621 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:38:01,627 WARN L227 SmtUtils]: Spent 6.31s on a formula simplification that was a NOOP. DAG size: 92 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:38:06,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [145699908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:06,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:38:06,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [19, 22] total 45 [2021-11-21 01:38:06,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455391608] [2021-11-21 01:38:06,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:06,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:38:06,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:06,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:38:06,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2278, Unknown=7, NotChecked=96, Total=2550 [2021-11-21 01:38:06,662 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 16 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:38:07,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:07,444 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2021-11-21 01:38:07,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 01:38:07,445 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2021-11-21 01:38:07,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:07,446 INFO L225 Difference]: With dead ends: 43 [2021-11-21 01:38:07,447 INFO L226 Difference]: Without dead ends: 40 [2021-11-21 01:38:07,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 35.3s TimeCoverageRelationStatistics Valid=169, Invalid=2278, Unknown=7, NotChecked=96, Total=2550 [2021-11-21 01:38:07,449 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 42 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:07,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 49 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 212 Invalid, 0 Unknown, 95 Unchecked, 0.8s Time] [2021-11-21 01:38:07,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-21 01:38:07,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2021-11-21 01:38:07,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:38:07,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-11-21 01:38:07,460 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 27 [2021-11-21 01:38:07,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:07,461 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-11-21 01:38:07,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:38:07,461 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-11-21 01:38:07,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-21 01:38:07,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:07,463 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:07,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:38:07,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-21 01:38:07,664 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:07,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:07,664 INFO L85 PathProgramCache]: Analyzing trace with hash -219279515, now seen corresponding path program 1 times [2021-11-21 01:38:07,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:07,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679050507] [2021-11-21 01:38:07,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:07,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:38:09,810 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:09,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679050507] [2021-11-21 01:38:09,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679050507] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:38:09,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114943677] [2021-11-21 01:38:09,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:09,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:09,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:38:09,811 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:38:09,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:38:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:10,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 101 conjunts are in the unsatisfiable core [2021-11-21 01:38:10,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:10,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:38:11,014 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:38:11,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-21 01:38:11,284 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 01:38:11,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 96 [2021-11-21 01:38:11,350 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-21 01:38:11,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 92 [2021-11-21 01:38:11,431 INFO L354 Elim1Store]: treesize reduction 116, result has 11.5 percent of original size [2021-11-21 01:38:11,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 121 treesize of output 74 [2021-11-21 01:38:11,991 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:38:11,992 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 6 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 70 [2021-11-21 01:38:12,003 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:38:12,003 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 43 [2021-11-21 01:38:12,013 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:38:12,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2021-11-21 01:38:12,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:38:20,551 INFO L354 Elim1Store]: treesize reduction 223, result has 11.9 percent of original size [2021-11-21 01:38:20,552 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 3 case distinctions, treesize of input 208 treesize of output 215 [2021-11-21 01:38:20,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:20,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:20,732 INFO L354 Elim1Store]: treesize reduction 316, result has 9.5 percent of original size [2021-11-21 01:38:20,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 187 treesize of output 138 [2021-11-21 01:38:20,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:20,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:20,907 INFO L354 Elim1Store]: treesize reduction 480, result has 8.6 percent of original size [2021-11-21 01:38:20,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 180 treesize of output 177 [2021-11-21 01:38:20,964 INFO L354 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2021-11-21 01:38:20,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 173 treesize of output 175 [2021-11-21 01:38:22,707 INFO L354 Elim1Store]: treesize reduction 456, result has 12.1 percent of original size [2021-11-21 01:38:22,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 330 treesize of output 245 [2021-11-21 01:38:22,822 INFO L354 Elim1Store]: treesize reduction 204, result has 10.9 percent of original size [2021-11-21 01:38:22,823 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 2 case distinctions, treesize of input 413 treesize of output 344 [2021-11-21 01:38:23,108 INFO L354 Elim1Store]: treesize reduction 782, result has 10.4 percent of original size [2021-11-21 01:38:23,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 328 treesize of output 311 [2021-11-21 01:39:29,026 INFO L354 Elim1Store]: treesize reduction 232, result has 11.1 percent of original size [2021-11-21 01:39:29,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 352 treesize of output 215 [2021-11-21 01:39:29,199 INFO L354 Elim1Store]: treesize reduction 232, result has 11.1 percent of original size [2021-11-21 01:39:29,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 205 treesize of output 162 [2021-11-21 01:39:29,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-21 01:39:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:39:29,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:39:31,836 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_36 Int) (v_DerPreprocessor_37 Int) (|ULTIMATE.start_dll_append_~new_last~0#1.offset| Int)) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse1 (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8)) (.cse2 (+ |c_ULTIMATE.start_dll_append_~last~0#1.offset| 4))) (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse2 v_DerPreprocessor_37)))) (store .cse0 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse1 v_DerPreprocessor_36))) (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse2 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|)))) (store .cse3 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse3 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse1 |c_ULTIMATE.start_dll_append_~last~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse2 |ULTIMATE.start_dll_append_~new_last~0#1.offset|)))) (store .cse4 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse1 |c_ULTIMATE.start_dll_append_~last~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) is different from false [2021-11-21 01:39:33,898 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_36 Int) (v_DerPreprocessor_37 Int) (|ULTIMATE.start_dll_append_~new_last~0#1.offset| Int) (|v_ULTIMATE.start_dll_append_~last~0#1.offset_13| Int)) (or (= (let ((.cse1 (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8)) (.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|)) (.cse3 (+ |v_ULTIMATE.start_dll_append_~last~0#1.offset_13| 4))) (select (select (let ((.cse0 (store |c_#memory_int| .cse2 (store (select |c_#memory_int| .cse2) .cse3 v_DerPreprocessor_37)))) (store .cse0 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse1 v_DerPreprocessor_36))) (select (select (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) .cse3 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|)))) (store .cse4 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse1 .cse2))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (let ((.cse5 (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) .cse3 |ULTIMATE.start_dll_append_~new_last~0#1.offset|)))) (store .cse5 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse1 |v_ULTIMATE.start_dll_append_~last~0#1.offset_13|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) |c_ULTIMATE.start_main_~data~0#1|) (< |v_ULTIMATE.start_dll_append_~last~0#1.offset_13| (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|)))) is different from false [2021-11-21 01:39:35,936 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_36 Int) (v_DerPreprocessor_37 Int) (|ULTIMATE.start_dll_append_~new_last~0#1.offset| Int) (|v_ULTIMATE.start_dll_append_~last~0#1.offset_13| Int)) (or (< |v_ULTIMATE.start_dll_append_~last~0#1.offset_13| (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|)) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse1 (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8)) (.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|)) (.cse3 (+ |v_ULTIMATE.start_dll_append_~last~0#1.offset_13| 4))) (select (select (let ((.cse0 (store |c_#memory_int| .cse2 (store (select |c_#memory_int| .cse2) .cse3 v_DerPreprocessor_37)))) (store .cse0 |c_ULTIMATE.start_dll_append_#t~ret7#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_append_#t~ret7#1.base|) .cse1 v_DerPreprocessor_36))) (select (select (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) .cse3 |c_ULTIMATE.start_dll_append_#t~ret7#1.base|)))) (store .cse4 |c_ULTIMATE.start_dll_append_#t~ret7#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_append_#t~ret7#1.base|) .cse1 .cse2))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (let ((.cse5 (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) .cse3 |ULTIMATE.start_dll_append_~new_last~0#1.offset|)))) (store .cse5 |c_ULTIMATE.start_dll_append_#t~ret7#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_append_#t~ret7#1.base|) .cse1 |v_ULTIMATE.start_dll_append_~last~0#1.offset_13|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))))) is different from false [2021-11-21 01:39:39,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114943677] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:39:39,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2010063427] [2021-11-21 01:39:39,650 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-21 01:39:39,650 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:39:39,651 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:39:39,651 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:39:39,651 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:39:39,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:39,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:39,778 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:39:39,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:39:39,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:39,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:39:40,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:39:40,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:39:40,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:40,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:40,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:40,337 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 25 treesize of output 19 [2021-11-21 01:39:40,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:40,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:40,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:40,394 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 25 treesize of output 19 [2021-11-21 01:39:40,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:40,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:40,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:40,438 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 21 treesize of output 26 [2021-11-21 01:39:40,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:40,587 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:39:40,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-11-21 01:39:40,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:40,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:40,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 13 [2021-11-21 01:39:40,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:40,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:40,843 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:39:40,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 13 [2021-11-21 01:39:40,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:40,904 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:39:40,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-11-21 01:39:41,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:39:41,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:41,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 408 treesize of output 385 [2021-11-21 01:39:41,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:39:41,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:41,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:41,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:39:41,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:41,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 385 treesize of output 368 [2021-11-21 01:39:41,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:41,269 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-21 01:39:41,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 374 treesize of output 355 [2021-11-21 01:39:41,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:39:41,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:41,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:41,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:39:41,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:41,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 421 treesize of output 309 [2021-11-21 01:39:41,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:41,357 INFO L354 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2021-11-21 01:39:41,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 262 treesize of output 255 [2021-11-21 01:39:41,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:41,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 19 [2021-11-21 01:39:41,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:41,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 33 [2021-11-21 01:39:42,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:39:42,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:42,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2021-11-21 01:39:42,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:39:42,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:39:42,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:42,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2021-11-21 01:39:43,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:39:43,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:39:43,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:43,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2021-11-21 01:39:43,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:39:43,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:43,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2021-11-21 01:39:43,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:43,538 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-21 01:39:43,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 185 treesize of output 177 [2021-11-21 01:39:43,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:43,652 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-21 01:39:43,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 213 treesize of output 205 [2021-11-21 01:39:43,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:43,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 226 [2021-11-21 01:39:43,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:43,844 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 27 treesize of output 17 [2021-11-21 01:39:44,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:44,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-21 01:39:44,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:44,270 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 27 treesize of output 17 [2021-11-21 01:39:44,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:44,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:44,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:44,427 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:39:44,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 41 [2021-11-21 01:39:44,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:44,674 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-11-21 01:39:44,674 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 31 [2021-11-21 01:39:45,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:39:45,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-21 01:39:45,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-21 01:39:45,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-21 01:39:45,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-21 01:39:45,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:39:46,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:46,218 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-21 01:39:46,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 185 treesize of output 177 [2021-11-21 01:39:46,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:46,300 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-21 01:39:46,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 213 treesize of output 199 [2021-11-21 01:39:46,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:46,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 226 [2021-11-21 01:39:46,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:46,427 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 27 treesize of output 17 [2021-11-21 01:39:46,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:46,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-21 01:39:46,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:46,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:46,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:46,749 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:39:46,750 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 2 case distinctions, treesize of input 48 treesize of output 20 [2021-11-21 01:39:46,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:46,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:46,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:46,910 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:39:46,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 26 [2021-11-21 01:39:47,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:47,050 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 87 treesize of output 53 [2021-11-21 01:39:47,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:39:47,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:39:48,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:39:48,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:39:50,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:39:50,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:50,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:50,454 INFO L354 Elim1Store]: treesize reduction 126, result has 20.3 percent of original size [2021-11-21 01:39:50,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 case distinctions, treesize of input 144 treesize of output 129 [2021-11-21 01:39:50,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:39:50,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:50,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:50,630 INFO L354 Elim1Store]: treesize reduction 124, result has 21.5 percent of original size [2021-11-21 01:39:50,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 case distinctions, treesize of input 121 treesize of output 108 [2021-11-21 01:39:50,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:50,963 INFO L354 Elim1Store]: treesize reduction 48, result has 43.5 percent of original size [2021-11-21 01:39:50,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 40 [2021-11-21 01:39:55,048 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 50 for LOIs [2021-11-21 01:39:57,461 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:40:08,229 WARN L227 SmtUtils]: Spent 6.31s on a formula simplification that was a NOOP. DAG size: 92 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:40:15,725 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:40:15,725 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:40:15,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 37 [2021-11-21 01:40:15,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128830865] [2021-11-21 01:40:15,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:40:15,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-21 01:40:15,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:40:15,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-21 01:40:15,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=2896, Unknown=7, NotChecked=330, Total=3422 [2021-11-21 01:40:15,728 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 37 states, 30 states have (on average 1.4) internal successors, (42), 28 states have internal predecessors, (42), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-21 01:40:23,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:23,490 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2021-11-21 01:40:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-21 01:40:23,491 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 30 states have (on average 1.4) internal successors, (42), 28 states have internal predecessors, (42), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 29 [2021-11-21 01:40:23,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:23,494 INFO L225 Difference]: With dead ends: 43 [2021-11-21 01:40:23,494 INFO L226 Difference]: Without dead ends: 41 [2021-11-21 01:40:23,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 46.0s TimeCoverageRelationStatistics Valid=243, Invalid=3543, Unknown=8, NotChecked=366, Total=4160 [2021-11-21 01:40:23,497 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 20 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:23,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 268 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 223 Invalid, 0 Unknown, 25 Unchecked, 0.8s Time] [2021-11-21 01:40:23,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-21 01:40:23,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2021-11-21 01:40:23,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:40:23,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2021-11-21 01:40:23,511 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 29 [2021-11-21 01:40:23,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:23,511 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2021-11-21 01:40:23,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 30 states have (on average 1.4) internal successors, (42), 28 states have internal predecessors, (42), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-21 01:40:23,512 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2021-11-21 01:40:23,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-21 01:40:23,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:23,513 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:40:23,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:40:23,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:40:23,739 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:23,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:23,740 INFO L85 PathProgramCache]: Analyzing trace with hash -660097916, now seen corresponding path program 1 times [2021-11-21 01:40:23,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:40:23,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625902584] [2021-11-21 01:40:23,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:23,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:40:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:26,647 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:26,647 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:40:26,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625902584] [2021-11-21 01:40:26,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625902584] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:40:26,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985438093] [2021-11-21 01:40:26,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:26,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:40:26,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:40:26,649 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:40:26,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:40:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:26,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-21 01:40:26,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:26,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:40:27,667 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:40:27,667 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 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-21 01:40:27,862 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-21 01:40:27,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 84 [2021-11-21 01:40:27,916 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-21 01:40:27,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 84 [2021-11-21 01:40:28,365 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-21 01:40:28,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 169 treesize of output 76 [2021-11-21 01:40:28,380 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-21 01:40:28,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 42 [2021-11-21 01:40:28,393 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:40:28,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-21 01:40:34,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:40:35,009 INFO L354 Elim1Store]: treesize reduction 412, result has 8.6 percent of original size [2021-11-21 01:40:35,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 223 treesize of output 150 [2021-11-21 01:40:35,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:40:35,201 INFO L354 Elim1Store]: treesize reduction 384, result has 8.8 percent of original size [2021-11-21 01:40:35,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 216 treesize of output 189 [2021-11-21 01:40:35,255 INFO L354 Elim1Store]: treesize reduction 34, result has 44.3 percent of original size [2021-11-21 01:40:35,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 209 treesize of output 211 [2021-11-21 01:40:37,741 INFO L354 Elim1Store]: treesize reduction 498, result has 15.2 percent of original size [2021-11-21 01:40:37,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 286 treesize of output 293 [2021-11-21 01:40:38,277 INFO L354 Elim1Store]: treesize reduction 706, result has 12.3 percent of original size [2021-11-21 01:40:38,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 22 case distinctions, treesize of input 340 treesize of output 285 [2021-11-21 01:40:53,637 INFO L354 Elim1Store]: treesize reduction 251, result has 30.5 percent of original size [2021-11-21 01:40:53,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 392 treesize of output 331 [2021-11-21 01:40:53,915 INFO L354 Elim1Store]: treesize reduction 216, result has 22.0 percent of original size [2021-11-21 01:40:53,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 310 treesize of output 267 [2021-11-21 01:40:56,674 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:40:56,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:40:58,845 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_append_~new_last~0#1.offset| Int)) (not (= (let ((.cse2 (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8)) (.cse3 (+ |c_ULTIMATE.start_dll_append_~last~0#1.offset| 4))) (select (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse3 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|)))) (store .cse1 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse1 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse2 |c_ULTIMATE.start_dll_append_~last~0#1.base|))))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse3 |ULTIMATE.start_dll_append_~new_last~0#1.offset|)))) (store .cse4 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse2 |c_ULTIMATE.start_dll_append_~last~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) 0))) is different from false [2021-11-21 01:41:07,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985438093] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:41:07,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [932205349] [2021-11-21 01:41:07,799 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-21 01:41:07,799 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:41:07,800 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:41:07,800 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:41:07,800 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:41:07,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:07,892 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:41:07,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:41:07,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:07,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:41:08,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:41:08,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:41:08,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:08,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:08,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:08,434 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 25 treesize of output 19 [2021-11-21 01:41:08,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:08,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:08,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:08,481 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 21 treesize of output 26 [2021-11-21 01:41:08,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:08,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:08,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:08,515 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 25 treesize of output 19 [2021-11-21 01:41:08,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:08,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:08,606 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:41:08,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 13 [2021-11-21 01:41:08,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:08,668 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:41:08,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-11-21 01:41:08,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:08,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:08,971 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:41:08,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 13 [2021-11-21 01:41:09,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:09,071 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:41:09,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-11-21 01:41:09,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:09,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:09,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:09,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:41:09,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-21 01:41:09,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:09,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:09,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:09,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:41:09,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-21 01:41:09,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:09,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2021-11-21 01:41:09,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:41:09,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:41:10,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:10,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 17 treesize of output 7 [2021-11-21 01:41:10,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:41:10,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:10,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 17 treesize of output 7 [2021-11-21 01:41:10,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:10,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 17 treesize of output 7 [2021-11-21 01:41:10,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:41:10,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:41:10,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:41:10,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:10,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 17 treesize of output 7 [2021-11-21 01:41:10,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:41:10,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:10,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 407 treesize of output 384 [2021-11-21 01:41:10,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:10,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:10,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 384 treesize of output 367 [2021-11-21 01:41:10,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:10,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:41:10,935 INFO L354 Elim1Store]: treesize reduction 58, result has 26.6 percent of original size [2021-11-21 01:41:10,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 369 treesize of output 358 [2021-11-21 01:41:10,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:10,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:10,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 426 treesize of output 409 [2021-11-21 01:41:10,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:10,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:41:11,066 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-21 01:41:11,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 411 treesize of output 390 [2021-11-21 01:41:11,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:11,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-21 01:41:11,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:11,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 23 treesize of output 13 [2021-11-21 01:41:12,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:12,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 20 [2021-11-21 01:41:13,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:13,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 20 [2021-11-21 01:41:13,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:13,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 27 treesize of output 17 [2021-11-21 01:41:14,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:14,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:41:14,709 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:41:14,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 41 [2021-11-21 01:41:15,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:15,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 31 [2021-11-21 01:41:17,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:17,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 10 [2021-11-21 01:41:17,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:17,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 17 treesize of output 7 [2021-11-21 01:41:17,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:41:17,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:41:17,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:41:17,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:17,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 10 [2021-11-21 01:41:17,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:17,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 17 treesize of output 7 [2021-11-21 01:41:17,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:41:17,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:41:18,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:41:18,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:41:18,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:18,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 407 treesize of output 384 [2021-11-21 01:41:18,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:18,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:18,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 384 treesize of output 367 [2021-11-21 01:41:18,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:18,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:41:18,480 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-21 01:41:18,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 369 treesize of output 354 [2021-11-21 01:41:18,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:18,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:18,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 416 treesize of output 399 [2021-11-21 01:41:18,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:18,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:41:18,636 INFO L354 Elim1Store]: treesize reduction 82, result has 20.4 percent of original size [2021-11-21 01:41:18,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 401 treesize of output 390 [2021-11-21 01:41:19,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:19,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-21 01:41:19,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:19,401 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 138 treesize of output 124 [2021-11-21 01:41:19,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:19,849 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 149 treesize of output 131 [2021-11-21 01:41:20,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:20,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:41:20,917 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:41:20,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 41 [2021-11-21 01:41:21,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:21,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 23 [2021-11-21 01:41:22,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:22,792 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 87 treesize of output 53 [2021-11-21 01:41:22,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:22,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 87 treesize of output 53 [2021-11-21 01:41:24,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:41:24,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:41:24,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:41:25,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:41:29,068 INFO L354 Elim1Store]: treesize reduction 31, result has 38.0 percent of original size [2021-11-21 01:41:29,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2021-11-21 01:41:29,193 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-21 01:41:29,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2021-11-21 01:41:29,418 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-21 01:41:29,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-11-21 01:41:32,236 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 50 for LOIs [2021-11-21 01:41:35,380 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:41:44,598 WARN L227 SmtUtils]: Spent 6.36s on a formula simplification that was a NOOP. DAG size: 92 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:41:50,518 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:41:50,518 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:41:50,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22] total 41 [2021-11-21 01:41:50,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123476348] [2021-11-21 01:41:50,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:41:50,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-21 01:41:50,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:41:50,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-21 01:41:50,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=3194, Unknown=6, NotChecked=114, Total=3540 [2021-11-21 01:41:50,522 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 41 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 32 states have internal predecessors, (42), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-21 01:42:12,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:12,187 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2021-11-21 01:42:12,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-21 01:42:12,188 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 32 states have internal predecessors, (42), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 29 [2021-11-21 01:42:12,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:12,189 INFO L225 Difference]: With dead ends: 43 [2021-11-21 01:42:12,190 INFO L226 Difference]: Without dead ends: 40 [2021-11-21 01:42:12,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1500 ImplicationChecksByTransitivity, 56.8s TimeCoverageRelationStatistics Valid=354, Invalid=4750, Unknown=12, NotChecked=140, Total=5256 [2021-11-21 01:42:12,194 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:12,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 291 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 192 Invalid, 0 Unknown, 43 Unchecked, 0.8s Time] [2021-11-21 01:42:12,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-21 01:42:12,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2021-11-21 01:42:12,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:42:12,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2021-11-21 01:42:12,205 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 29 [2021-11-21 01:42:12,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:12,206 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2021-11-21 01:42:12,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 32 states have internal predecessors, (42), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-21 01:42:12,206 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2021-11-21 01:42:12,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-21 01:42:12,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:12,208 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:12,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:42:12,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:42:12,412 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:42:12,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:12,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1792215135, now seen corresponding path program 1 times [2021-11-21 01:42:12,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:42:12,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154365941] [2021-11-21 01:42:12,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:12,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:42:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:12,603 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-21 01:42:12,603 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:42:12,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154365941] [2021-11-21 01:42:12,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154365941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:42:12,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:42:12,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:42:12,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502704703] [2021-11-21 01:42:12,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:12,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:42:12,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:42:12,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:42:12,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:42:12,605 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:42:12,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:12,807 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2021-11-21 01:42:12,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:42:12,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2021-11-21 01:42:12,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:12,809 INFO L225 Difference]: With dead ends: 45 [2021-11-21 01:42:12,809 INFO L226 Difference]: Without dead ends: 40 [2021-11-21 01:42:12,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:42:12,811 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:12,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 65 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:42:12,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-21 01:42:12,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-11-21 01:42:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.1875) internal successors, (38), 32 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:42:12,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2021-11-21 01:42:12,823 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 30 [2021-11-21 01:42:12,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:12,824 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2021-11-21 01:42:12,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:42:12,824 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2021-11-21 01:42:12,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-21 01:42:12,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:12,825 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:12,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:42:12,826 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:42:12,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:12,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1276272768, now seen corresponding path program 1 times [2021-11-21 01:42:12,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:42:12,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651843104] [2021-11-21 01:42:12,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:12,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:42:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:17,009 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:42:17,009 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:42:17,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651843104] [2021-11-21 01:42:17,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651843104] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:42:17,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058179452] [2021-11-21 01:42:17,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:17,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:42:17,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:42:17,012 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:42:17,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 01:42:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:17,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 120 conjunts are in the unsatisfiable core [2021-11-21 01:42:17,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:42:17,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:42:18,487 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:42:18,487 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 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-21 01:42:18,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 90 [2021-11-21 01:42:18,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 77 [2021-11-21 01:42:18,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 82 [2021-11-21 01:42:18,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 62 [2021-11-21 01:42:19,552 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:42:19,552 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 132 treesize of output 66 [2021-11-21 01:42:19,563 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:42:19,563 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 3 case distinctions, treesize of input 57 treesize of output 45 [2021-11-21 01:42:19,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2021-11-21 01:42:19,592 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:42:19,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-21 01:42:28,366 INFO L354 Elim1Store]: treesize reduction 223, result has 11.9 percent of original size [2021-11-21 01:42:28,367 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 3 case distinctions, treesize of input 207 treesize of output 214 [2021-11-21 01:42:28,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:28,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:28,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:28,597 INFO L354 Elim1Store]: treesize reduction 292, result has 10.2 percent of original size [2021-11-21 01:42:28,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 186 treesize of output 134 [2021-11-21 01:42:28,667 INFO L354 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2021-11-21 01:42:28,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 179 treesize of output 181 [2021-11-21 01:42:28,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:28,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:28,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:28,875 INFO L354 Elim1Store]: treesize reduction 436, result has 9.4 percent of original size [2021-11-21 01:42:28,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 172 treesize of output 174 [2021-11-21 01:42:32,778 INFO L354 Elim1Store]: treesize reduction 710, result has 12.3 percent of original size [2021-11-21 01:42:32,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 300 treesize of output 330 [2021-11-21 01:42:33,413 INFO L354 Elim1Store]: treesize reduction 598, result has 13.5 percent of original size [2021-11-21 01:42:33,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 366 treesize of output 328 [2021-11-21 01:42:33,469 INFO L354 Elim1Store]: treesize reduction 83, result has 11.7 percent of original size [2021-11-21 01:42:33,470 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 419 treesize of output 373 [2021-11-21 01:42:33,512 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-11-21 01:42:33,513 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 370 treesize of output 354 [2021-11-21 01:42:57,837 INFO L354 Elim1Store]: treesize reduction 202, result has 30.1 percent of original size [2021-11-21 01:42:57,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 365 treesize of output 314 [2021-11-21 01:42:58,108 INFO L354 Elim1Store]: treesize reduction 180, result has 25.3 percent of original size [2021-11-21 01:42:58,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 296 treesize of output 257 [2021-11-21 01:43:03,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-21 01:43:03,967 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:43:03,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:44:04,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058179452] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:44:04,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [867044402] [2021-11-21 01:44:04,347 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-21 01:44:04,347 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:44:04,347 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:44:04,348 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:44:04,348 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:44:04,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:04,440 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:44:04,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:44:04,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:04,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:44:04,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:44:04,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:44:04,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:04,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:05,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:05,002 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 25 treesize of output 19 [2021-11-21 01:44:05,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:05,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:05,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:05,037 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 25 treesize of output 19 [2021-11-21 01:44:05,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:05,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:05,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:05,089 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 21 treesize of output 26 [2021-11-21 01:44:05,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:05,167 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:44:05,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-11-21 01:44:05,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:05,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:05,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 13 [2021-11-21 01:44:05,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:05,609 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:44:05,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-11-21 01:44:05,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:05,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:05,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 13 [2021-11-21 01:44:05,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:05,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:05,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:05,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:44:05,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-21 01:44:06,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:06,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2021-11-21 01:44:06,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:06,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:06,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:06,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:44:06,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-21 01:44:06,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:44:06,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:44:06,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:06,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 17 treesize of output 7 [2021-11-21 01:44:06,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:06,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 17 treesize of output 7 [2021-11-21 01:44:06,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:44:07,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:44:07,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:44:07,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:07,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 17 treesize of output 7 [2021-11-21 01:44:07,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:07,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 17 treesize of output 7 [2021-11-21 01:44:07,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:44:07,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:44:07,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:07,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 410 treesize of output 387 [2021-11-21 01:44:07,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:07,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:07,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 387 treesize of output 370 [2021-11-21 01:44:07,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:07,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:44:07,675 INFO L354 Elim1Store]: treesize reduction 58, result has 26.6 percent of original size [2021-11-21 01:44:07,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 372 treesize of output 361 [2021-11-21 01:44:07,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:07,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:07,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 429 treesize of output 412 [2021-11-21 01:44:07,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:07,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:44:07,819 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-21 01:44:07,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 414 treesize of output 393 [2021-11-21 01:44:08,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:08,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-21 01:44:08,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:08,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 20 [2021-11-21 01:44:09,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:09,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 44 treesize of output 30 [2021-11-21 01:44:10,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:10,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:44:10,268 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:44:10,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 41 [2021-11-21 01:44:10,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:10,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 31 [2021-11-21 01:44:12,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:44:12,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:44:12,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:12,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 10 [2021-11-21 01:44:12,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:44:12,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:12,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 17 treesize of output 7 [2021-11-21 01:44:12,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:12,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 17 treesize of output 7 [2021-11-21 01:44:12,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:44:12,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:44:13,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:13,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 10 [2021-11-21 01:44:13,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:44:13,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:44:13,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:13,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 410 treesize of output 387 [2021-11-21 01:44:13,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:13,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:13,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 387 treesize of output 370 [2021-11-21 01:44:13,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:13,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:13,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 372 treesize of output 355 [2021-11-21 01:44:13,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:13,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:44:13,541 INFO L354 Elim1Store]: treesize reduction 58, result has 26.6 percent of original size [2021-11-21 01:44:13,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 357 treesize of output 346 [2021-11-21 01:44:13,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:13,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:44:13,643 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-21 01:44:13,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 414 treesize of output 393 [2021-11-21 01:44:14,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:14,320 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 27 treesize of output 17 [2021-11-21 01:44:14,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:14,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-21 01:44:14,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:14,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 20 [2021-11-21 01:44:14,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:14,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 23 treesize of output 13 [2021-11-21 01:44:15,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:15,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:44:15,813 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:44:15,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 41 [2021-11-21 01:44:16,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:16,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 34 [2021-11-21 01:44:18,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:44:18,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:44:18,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:44:19,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:44:22,966 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-21 01:44:22,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2021-11-21 01:44:23,140 INFO L354 Elim1Store]: treesize reduction 31, result has 38.0 percent of original size [2021-11-21 01:44:23,140 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 1 case distinctions, treesize of input 39 treesize of output 19 [2021-11-21 01:44:23,276 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-21 01:44:23,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-11-21 01:44:27,264 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 50 for LOIs [2021-11-21 01:44:30,066 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:44:41,947 WARN L227 SmtUtils]: Spent 6.37s on a formula simplification that was a NOOP. DAG size: 92 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:44:50,401 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:44:50,401 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:44:50,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 45 [2021-11-21 01:44:50,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934186324] [2021-11-21 01:44:50,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:44:50,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-21 01:44:50,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:44:50,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-21 01:44:50,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=4274, Unknown=28, NotChecked=0, Total=4556 [2021-11-21 01:44:50,405 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 45 states, 38 states have (on average 1.236842105263158) internal successors, (47), 36 states have internal predecessors, (47), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-21 01:45:10,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:45:10,353 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2021-11-21 01:45:10,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-21 01:45:10,354 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 38 states have (on average 1.236842105263158) internal successors, (47), 36 states have internal predecessors, (47), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 31 [2021-11-21 01:45:10,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:45:10,355 INFO L225 Difference]: With dead ends: 48 [2021-11-21 01:45:10,355 INFO L226 Difference]: Without dead ends: 46 [2021-11-21 01:45:10,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 112.9s TimeCoverageRelationStatistics Valid=378, Invalid=5910, Unknown=32, NotChecked=0, Total=6320 [2021-11-21 01:45:10,359 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:45:10,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 376 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 366 Invalid, 0 Unknown, 87 Unchecked, 1.5s Time] [2021-11-21 01:45:10,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-21 01:45:10,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2021-11-21 01:45:10,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:45:10,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2021-11-21 01:45:10,373 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 31 [2021-11-21 01:45:10,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:45:10,373 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2021-11-21 01:45:10,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 38 states have (on average 1.236842105263158) internal successors, (47), 36 states have internal predecessors, (47), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-21 01:45:10,374 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2021-11-21 01:45:10,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-21 01:45:10,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:45:10,376 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:45:10,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:45:10,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:45:10,603 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:45:10,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:45:10,604 INFO L85 PathProgramCache]: Analyzing trace with hash 89883367, now seen corresponding path program 1 times [2021-11-21 01:45:10,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:45:10,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429086776] [2021-11-21 01:45:10,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:45:10,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:45:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:45:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 01:45:12,135 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:45:12,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429086776] [2021-11-21 01:45:12,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429086776] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:45:12,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993764795] [2021-11-21 01:45:12,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:45:12,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:45:12,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:45:12,137 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:45:12,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c24e2de-2e8f-4557-aba4-7fa8e1dc7aa5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 01:45:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:45:12,257 WARN L261 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 142 conjunts are in the unsatisfiable core [2021-11-21 01:45:12,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:45:12,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:45:12,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-11-21 01:45:12,831 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:45:12,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-21 01:45:13,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:45:13,114 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 18 treesize of output 7 [2021-11-21 01:45:13,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:45:13,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-11-21 01:45:13,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2021-11-21 01:45:13,447 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:45:13,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2021-11-21 01:45:16,346 INFO L354 Elim1Store]: treesize reduction 149, result has 25.9 percent of original size [2021-11-21 01:45:16,346 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 3 case distinctions, treesize of input 93 treesize of output 126 [2021-11-21 01:45:16,584 INFO L354 Elim1Store]: treesize reduction 179, result has 16.0 percent of original size [2021-11-21 01:45:16,584 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 3 case distinctions, treesize of input 98 treesize of output 102 [2021-11-21 01:45:16,772 INFO L354 Elim1Store]: treesize reduction 179, result has 16.0 percent of original size [2021-11-21 01:45:16,773 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 3 case distinctions, treesize of input 99 treesize of output 103 [2021-11-21 01:45:17,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:45:17,290 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:45:17,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-21 01:45:18,102 INFO L354 Elim1Store]: treesize reduction 370, result has 12.7 percent of original size [2021-11-21 01:45:18,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 199 treesize of output 206 [2021-11-21 01:45:18,397 INFO L354 Elim1Store]: treesize reduction 362, result has 14.6 percent of original size [2021-11-21 01:45:18,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 181 treesize of output 196 [2021-11-21 01:45:18,481 INFO L354 Elim1Store]: treesize reduction 134, result has 13.5 percent of original size [2021-11-21 01:45:18,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 249 treesize of output 227 [2021-11-21 01:45:18,524 INFO L354 Elim1Store]: treesize reduction 65, result has 9.7 percent of original size [2021-11-21 01:45:18,525 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 2 case distinctions, treesize of input 234 treesize of output 197 [2021-11-21 01:45:19,337 INFO L354 Elim1Store]: treesize reduction 78, result has 1.3 percent of original size [2021-11-21 01:45:19,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 273 treesize of output 103 [2021-11-21 01:45:19,357 INFO L354 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2021-11-21 01:45:19,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 70 [2021-11-21 01:45:19,369 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-21 01:45:19,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 44 [2021-11-21 01:45:19,381 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:45:19,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 32 [2021-11-21 01:45:22,042 INFO L354 Elim1Store]: treesize reduction 279, result has 11.7 percent of original size [2021-11-21 01:45:22,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 336 treesize of output 328 [2021-11-21 01:45:22,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:45:22,195 INFO L354 Elim1Store]: treesize reduction 277, result has 9.2 percent of original size [2021-11-21 01:45:22,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 319 treesize of output 176 [2021-11-21 01:45:22,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:45:22,332 INFO L354 Elim1Store]: treesize reduction 247, result has 9.5 percent of original size [2021-11-21 01:45:22,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 312 treesize of output 265 [2021-11-21 01:45:22,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:45:22,372 INFO L354 Elim1Store]: treesize reduction 87, result has 8.4 percent of original size [2021-11-21 01:45:22,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 305 treesize of output 287 [2021-11-21 01:45:25,697 INFO L354 Elim1Store]: treesize reduction 496, result has 14.2 percent of original size [2021-11-21 01:45:25,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 417 treesize of output 371 [2021-11-21 01:45:26,389 INFO L354 Elim1Store]: treesize reduction 569, result has 14.4 percent of original size [2021-11-21 01:45:26,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 435 treesize of output 324 [2021-11-21 01:45:26,577 INFO L354 Elim1Store]: treesize reduction 158, result has 37.5 percent of original size [2021-11-21 01:45:26,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 488 treesize of output 495 [2021-11-21 01:45:26,625 INFO L354 Elim1Store]: treesize reduction 87, result has 14.7 percent of original size [2021-11-21 01:45:26,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 489 treesize of output 480