./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/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_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/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_fa81a210-8902-47b4-922b-8384b2a25806/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 32a779d95d64b7b3ae1a801430dde2c7d15b3372c5d0cdd47679441a42687631 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:38:28,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:38:28,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:38:28,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:38:28,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:38:28,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:38:28,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:38:28,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:38:28,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:38:28,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:38:28,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:38:28,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:38:28,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:38:28,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:38:28,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:38:28,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:38:28,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:38:28,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:38:28,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:38:28,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:38:28,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:38:28,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:38:28,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:38:28,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:38:28,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:38:28,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:38:28,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:38:28,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:38:28,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:38:28,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:38:28,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:38:28,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:38:28,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:38:28,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:38:28,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:38:28,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:38:28,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:38:28,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:38:28,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:38:28,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:38:28,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:38:28,307 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:38:28,350 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:38:28,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:38:28,351 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:38:28,351 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:38:28,352 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:38:28,358 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:38:28,359 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:38:28,359 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:38:28,359 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:38:28,359 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:38:28,360 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:38:28,361 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:38:28,361 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:38:28,361 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:38:28,361 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:38:28,362 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:38:28,362 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:38:28,362 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:38:28,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:38:28,363 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:38:28,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:38:28,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:38:28,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:38:28,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:38:28,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:38:28,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:38:28,366 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:38:28,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:38:28,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:38:28,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:38:28,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:38:28,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:38:28,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:38:28,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:38:28,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:38:28,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:38:28,369 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:38:28,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:38:28,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:38:28,369 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:38:28,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:38:28,370 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_fa81a210-8902-47b4-922b-8384b2a25806/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32a779d95d64b7b3ae1a801430dde2c7d15b3372c5d0cdd47679441a42687631 [2021-11-21 01:38:28,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:38:28,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:38:28,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:38:28,711 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:38:28,711 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:38:28,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i [2021-11-21 01:38:28,777 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/data/3ef62b23e/70dbc0ae0fb14f80aaf2ec372c8f5927/FLAG70444a5e1 [2021-11-21 01:38:29,336 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:38:29,343 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i [2021-11-21 01:38:29,371 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/data/3ef62b23e/70dbc0ae0fb14f80aaf2ec372c8f5927/FLAG70444a5e1 [2021-11-21 01:38:29,815 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/data/3ef62b23e/70dbc0ae0fb14f80aaf2ec372c8f5927 [2021-11-21 01:38:29,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:38:29,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:38:29,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:38:29,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:38:29,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:38:29,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:38:29" (1/1) ... [2021-11-21 01:38:29,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52edc193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:29, skipping insertion in model container [2021-11-21 01:38:29,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:38:29" (1/1) ... [2021-11-21 01:38:29,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:38:29,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:38:30,303 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_fa81a210-8902-47b4-922b-8384b2a25806/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i[33021,33034] [2021-11-21 01:38:30,394 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_fa81a210-8902-47b4-922b-8384b2a25806/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i[44590,44603] [2021-11-21 01:38:30,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:38:30,418 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:38:30,446 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_fa81a210-8902-47b4-922b-8384b2a25806/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i[33021,33034] [2021-11-21 01:38:30,506 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_fa81a210-8902-47b4-922b-8384b2a25806/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i[44590,44603] [2021-11-21 01:38:30,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:38:30,562 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:38:30,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:30 WrapperNode [2021-11-21 01:38:30,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:38:30,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:38:30,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:38:30,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:38:30,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:30" (1/1) ... [2021-11-21 01:38:30,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:30" (1/1) ... [2021-11-21 01:38:30,715 INFO L137 Inliner]: procedures = 177, calls = 336, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1181 [2021-11-21 01:38:30,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:38:30,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:38:30,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:38:30,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:38:30,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:30" (1/1) ... [2021-11-21 01:38:30,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:30" (1/1) ... [2021-11-21 01:38:30,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:30" (1/1) ... [2021-11-21 01:38:30,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:30" (1/1) ... [2021-11-21 01:38:30,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:30" (1/1) ... [2021-11-21 01:38:30,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:30" (1/1) ... [2021-11-21 01:38:30,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:30" (1/1) ... [2021-11-21 01:38:30,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:38:30,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:38:30,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:38:30,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:38:30,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:30" (1/1) ... [2021-11-21 01:38:30,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:38:30,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:38:30,909 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:38:30,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:38:30,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:38:30,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:38:30,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:38:30,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:38:30,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:38:30,949 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:38:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:38:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:38:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:38:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:38:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 01:38:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:38:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:38:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:38:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:38:30,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:38:31,203 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:38:31,235 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:38:32,370 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:38:32,788 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:38:32,788 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-21 01:38:32,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:38:32 BoogieIcfgContainer [2021-11-21 01:38:32,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:38:32,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:38:32,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:38:32,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:38:32,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:38:29" (1/3) ... [2021-11-21 01:38:32,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48fc05bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:38:32, skipping insertion in model container [2021-11-21 01:38:32,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:38:30" (2/3) ... [2021-11-21 01:38:32,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48fc05bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:38:32, skipping insertion in model container [2021-11-21 01:38:32,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:38:32" (3/3) ... [2021-11-21 01:38:32,798 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test3-2.i [2021-11-21 01:38:32,803 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:38:32,803 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 01:38:32,850 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:38:32,857 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 01:38:32,857 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 01:38:32,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 124 states have (on average 1.7983870967741935) internal successors, (223), 131 states have internal predecessors, (223), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:38:32,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:38:32,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:32,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:32,884 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:32,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:32,889 INFO L85 PathProgramCache]: Analyzing trace with hash 2145808350, now seen corresponding path program 1 times [2021-11-21 01:38:32,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:32,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380904917] [2021-11-21 01:38:32,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:32,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:33,087 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 01:38:33,088 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:33,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380904917] [2021-11-21 01:38:33,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380904917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:33,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:33,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:38:33,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165782433] [2021-11-21 01:38:33,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:33,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:38:33,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:33,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:38:33,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:38:33,137 INFO L87 Difference]: Start difference. First operand has 137 states, 124 states have (on average 1.7983870967741935) internal successors, (223), 131 states have internal predecessors, (223), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:38:33,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:33,773 INFO L93 Difference]: Finished difference Result 273 states and 482 transitions. [2021-11-21 01:38:33,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:38:33,781 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 01:38:33,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:33,792 INFO L225 Difference]: With dead ends: 273 [2021-11-21 01:38:33,793 INFO L226 Difference]: Without dead ends: 122 [2021-11-21 01:38:33,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:38:33,802 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:33,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:38:33,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-21 01:38:33,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-11-21 01:38:33,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 110 states have (on average 1.2181818181818183) internal successors, (134), 116 states have internal predecessors, (134), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:38:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 150 transitions. [2021-11-21 01:38:33,873 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 150 transitions. Word has length 8 [2021-11-21 01:38:33,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:33,874 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 150 transitions. [2021-11-21 01:38:33,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:38:33,874 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 150 transitions. [2021-11-21 01:38:33,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:38:33,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:33,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:33,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:38:33,877 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:33,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:33,880 INFO L85 PathProgramCache]: Analyzing trace with hash 131240621, now seen corresponding path program 1 times [2021-11-21 01:38:33,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:33,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440592084] [2021-11-21 01:38:33,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:33,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:34,008 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 01:38:34,009 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:34,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440592084] [2021-11-21 01:38:34,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440592084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:34,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:34,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:38:34,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146882080] [2021-11-21 01:38:34,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:34,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:38:34,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:34,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:38:34,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:38:34,016 INFO L87 Difference]: Start difference. First operand 122 states and 150 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:38:35,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:35,747 INFO L93 Difference]: Finished difference Result 258 states and 326 transitions. [2021-11-21 01:38:35,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:38:35,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 01:38:35,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:35,761 INFO L225 Difference]: With dead ends: 258 [2021-11-21 01:38:35,761 INFO L226 Difference]: Without dead ends: 189 [2021-11-21 01:38:35,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:38:35,764 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 73 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:35,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 359 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-21 01:38:35,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-21 01:38:35,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 124. [2021-11-21 01:38:35,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 112 states have (on average 1.2142857142857142) internal successors, (136), 118 states have internal predecessors, (136), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:38:35,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 152 transitions. [2021-11-21 01:38:35,780 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 152 transitions. Word has length 13 [2021-11-21 01:38:35,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:35,780 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 152 transitions. [2021-11-21 01:38:35,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:38:35,781 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 152 transitions. [2021-11-21 01:38:35,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-21 01:38:35,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:35,783 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:35,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:38:35,783 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:35,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:35,784 INFO L85 PathProgramCache]: Analyzing trace with hash 993801336, now seen corresponding path program 1 times [2021-11-21 01:38:35,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:35,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086298868] [2021-11-21 01:38:35,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:35,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:35,807 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:38:35,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [298631072] [2021-11-21 01:38:35,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:35,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:35,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:38:35,824 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:38:35,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:38:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:36,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:38:36,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:36,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:38:36,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:38:36,257 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:36,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086298868] [2021-11-21 01:38:36,258 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:38:36,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298631072] [2021-11-21 01:38:36,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298631072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:36,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:36,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:38:36,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140905952] [2021-11-21 01:38:36,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:36,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:38:36,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:36,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:38:36,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:38:36,261 INFO L87 Difference]: Start difference. First operand 124 states and 152 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:38:37,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:37,076 INFO L93 Difference]: Finished difference Result 304 states and 377 transitions. [2021-11-21 01:38:37,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:38:37,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-21 01:38:37,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:37,085 INFO L225 Difference]: With dead ends: 304 [2021-11-21 01:38:37,085 INFO L226 Difference]: Without dead ends: 183 [2021-11-21 01:38:37,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 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 01:38:37,090 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 58 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:37,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 280 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 01:38:37,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-21 01:38:37,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 167. [2021-11-21 01:38:37,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 155 states have (on average 1.1935483870967742) internal successors, (185), 161 states have internal predecessors, (185), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:38:37,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 201 transitions. [2021-11-21 01:38:37,108 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 201 transitions. Word has length 37 [2021-11-21 01:38:37,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:37,109 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 201 transitions. [2021-11-21 01:38:37,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:38:37,109 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 201 transitions. [2021-11-21 01:38:37,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-21 01:38:37,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:37,112 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:37,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:38:37,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:37,327 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:37,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:37,328 INFO L85 PathProgramCache]: Analyzing trace with hash 237821332, now seen corresponding path program 1 times [2021-11-21 01:38:37,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:37,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721871335] [2021-11-21 01:38:37,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:37,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:37,347 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:38:37,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805807633] [2021-11-21 01:38:37,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:37,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:37,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:38:37,349 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:38:37,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:38:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:37,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:38:37,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:37,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:38:37,725 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 01:38:37,744 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 01:38:37,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:38:37,744 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:37,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721871335] [2021-11-21 01:38:37,745 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:38:37,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805807633] [2021-11-21 01:38:37,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805807633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:37,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:37,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:38:37,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276815793] [2021-11-21 01:38:37,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:37,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:38:37,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:37,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:38:37,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:38:37,748 INFO L87 Difference]: Start difference. First operand 167 states and 201 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:38:40,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:38:40,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:40,056 INFO L93 Difference]: Finished difference Result 231 states and 285 transitions. [2021-11-21 01:38:40,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:38:40,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2021-11-21 01:38:40,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:40,082 INFO L225 Difference]: With dead ends: 231 [2021-11-21 01:38:40,083 INFO L226 Difference]: Without dead ends: 212 [2021-11-21 01:38:40,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:38:40,084 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 58 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:40,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 354 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-21 01:38:40,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-21 01:38:40,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2021-11-21 01:38:40,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 157 states have (on average 1.1910828025477707) internal successors, (187), 163 states have internal predecessors, (187), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:38:40,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 203 transitions. [2021-11-21 01:38:40,123 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 203 transitions. Word has length 50 [2021-11-21 01:38:40,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:40,125 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 203 transitions. [2021-11-21 01:38:40,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:38:40,126 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 203 transitions. [2021-11-21 01:38:40,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-21 01:38:40,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:40,128 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:40,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:38:40,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-21 01:38:40,339 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:40,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:40,340 INFO L85 PathProgramCache]: Analyzing trace with hash 375836451, now seen corresponding path program 1 times [2021-11-21 01:38:40,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:40,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629661517] [2021-11-21 01:38:40,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:40,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:40,362 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:38:40,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2089625383] [2021-11-21 01:38:40,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:40,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:40,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:38:40,364 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:38:40,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:38:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:40,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:38:40,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:40,790 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 01:38:40,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:38:40,791 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:40,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629661517] [2021-11-21 01:38:40,791 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:38:40,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089625383] [2021-11-21 01:38:40,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089625383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:40,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:40,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:38:40,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694801521] [2021-11-21 01:38:40,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:40,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:38:40,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:40,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:38:40,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:38:40,793 INFO L87 Difference]: Start difference. First operand 169 states and 203 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:38:41,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:41,641 INFO L93 Difference]: Finished difference Result 395 states and 492 transitions. [2021-11-21 01:38:41,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:38:41,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-11-21 01:38:41,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:41,644 INFO L225 Difference]: With dead ends: 395 [2021-11-21 01:38:41,644 INFO L226 Difference]: Without dead ends: 242 [2021-11-21 01:38:41,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:38:41,646 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 257 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:41,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 296 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 01:38:41,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-21 01:38:41,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 214. [2021-11-21 01:38:41,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 202 states have (on average 1.193069306930693) internal successors, (241), 208 states have internal predecessors, (241), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:38:41,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 257 transitions. [2021-11-21 01:38:41,666 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 257 transitions. Word has length 57 [2021-11-21 01:38:41,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:41,666 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 257 transitions. [2021-11-21 01:38:41,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:38:41,667 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 257 transitions. [2021-11-21 01:38:41,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-21 01:38:41,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:41,670 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:41,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:38:41,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:41,883 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:41,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:41,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1459918940, now seen corresponding path program 1 times [2021-11-21 01:38:41,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:41,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523128213] [2021-11-21 01:38:41,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:41,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:41,905 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:38:41,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387695099] [2021-11-21 01:38:41,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:41,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:41,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:38:41,909 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:38:41,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:38:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:42,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:38:42,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:42,859 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:38:42,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:38:42,859 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:42,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523128213] [2021-11-21 01:38:42,860 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:38:42,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387695099] [2021-11-21 01:38:42,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387695099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:38:42,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:38:42,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:38:42,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905330812] [2021-11-21 01:38:42,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:38:42,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:38:42,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:42,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:38:42,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:38:42,863 INFO L87 Difference]: Start difference. First operand 214 states and 257 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:38:44,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:44,623 INFO L93 Difference]: Finished difference Result 411 states and 498 transitions. [2021-11-21 01:38:44,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:38:44,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 64 [2021-11-21 01:38:44,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:44,631 INFO L225 Difference]: With dead ends: 411 [2021-11-21 01:38:44,631 INFO L226 Difference]: Without dead ends: 216 [2021-11-21 01:38:44,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:38:44,632 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 1 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:44,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 389 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-21 01:38:44,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-21 01:38:44,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-21 01:38:44,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 203 states have (on average 1.1970443349753694) internal successors, (243), 210 states have internal predecessors, (243), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-21 01:38:44,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 260 transitions. [2021-11-21 01:38:44,649 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 260 transitions. Word has length 64 [2021-11-21 01:38:44,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:44,650 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 260 transitions. [2021-11-21 01:38:44,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:38:44,650 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 260 transitions. [2021-11-21 01:38:44,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-21 01:38:44,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:44,653 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:44,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:38:44,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:44,875 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:38:44,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:44,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1243076896, now seen corresponding path program 1 times [2021-11-21 01:38:44,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:44,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116168262] [2021-11-21 01:38:44,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:44,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:44,887 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:38:44,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509770768] [2021-11-21 01:38:44,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:44,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:44,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:38:44,889 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:38:44,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa81a210-8902-47b4-922b-8384b2a25806/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:38:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:51,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:38:51,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:51,835 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:38:51,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:38:52,089 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:38:52,090 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:52,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116168262] [2021-11-21 01:38:52,090 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:38:52,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509770768] [2021-11-21 01:38:52,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509770768] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:38:52,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [292037954] [2021-11-21 01:38:52,119 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-11-21 01:38:52,119 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:38:52,124 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:38:52,129 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:38:52,130 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:38:52,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:38:52,290 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 01:38:52,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:52,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 01:38:52,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:52,333 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:38:52,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-21 01:38:52,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:52,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:52,385 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:38:52,385 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 01:38:52,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:52,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-21 01:38:52,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:52,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:52,610 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-21 01:38:52,610 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 3 case distinctions, treesize of input 22 treesize of output 38 [2021-11-21 01:38:52,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:52,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:52,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:52,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:52,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:52,672 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-21 01:38:52,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 53 [2021-11-21 01:38:52,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:52,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:52,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:52,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:52,744 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-21 01:38:52,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-21 01:38:52,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:52,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-21 01:38:54,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-21 01:38:54,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-21 01:38:54,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 77 [2021-11-21 01:38:54,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 76 [2021-11-21 01:38:54,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-11-21 01:38:54,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-11-21 01:38:54,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 98 [2021-11-21 01:38:54,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 79 [2021-11-21 01:38:54,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,682 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:38:54,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 89 treesize of output 79 [2021-11-21 01:38:54,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 01:38:54,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 115 [2021-11-21 01:38:54,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,892 INFO L354 Elim1Store]: treesize reduction 194, result has 22.4 percent of original size [2021-11-21 01:38:54,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 127 treesize of output 163 [2021-11-21 01:38:54,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:54,953 INFO L354 Elim1Store]: treesize reduction 120, result has 14.9 percent of original size [2021-11-21 01:38:54,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 145 treesize of output 156 [2021-11-21 01:38:55,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 01:38:55,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-21 01:38:55,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-21 01:38:55,678 INFO L354 Elim1Store]: treesize reduction 34, result has 22.7 percent of original size [2021-11-21 01:38:55,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 97 [2021-11-21 01:38:55,703 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-21 01:38:55,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 93 [2021-11-21 01:38:55,732 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-21 01:38:55,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 89 [2021-11-21 01:38:55,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-21 01:38:55,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 01:38:55,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-21 01:38:55,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:55,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:55,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:55,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:55,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:55,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:55,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:55,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:55,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:55,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:55,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-21 01:38:55,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:55,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:55,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:55,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:55,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:55,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:55,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 26 [2021-11-21 01:38:56,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-11-21 01:38:56,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-21 01:38:56,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-11-21 01:38:56,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:56,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 26 [2021-11-21 01:39:04,254 WARN L227 SmtUtils]: Spent 7.69s on a formula simplification. DAG size of input: 66 DAG size of output: 32 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:39:04,255 INFO L354 Elim1Store]: treesize reduction 348, result has 15.7 percent of original size [2021-11-21 01:39:04,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 2847 treesize of output 2324 [2021-11-21 01:39:04,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:13,314 WARN L227 SmtUtils]: Spent 9.02s on a formula simplification. DAG size of input: 90 DAG size of output: 46 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:39:13,314 INFO L354 Elim1Store]: treesize reduction 262, result has 32.6 percent of original size [2021-11-21 01:39:13,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 2948 treesize of output 2666 [2021-11-21 01:39:24,024 WARN L227 SmtUtils]: Spent 10.56s on a formula simplification. DAG size of input: 252 DAG size of output: 143 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:39:24,025 INFO L354 Elim1Store]: treesize reduction 2662, result has 30.3 percent of original size [2021-11-21 01:39:24,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 2852 treesize of output 2682 [2021-11-21 01:39:24,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:24,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:24,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:25,893 INFO L354 Elim1Store]: treesize reduction 188, result has 20.0 percent of original size [2021-11-21 01:39:25,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 25950 treesize of output 25981 [2021-11-21 01:39:26,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:26,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:26,825 INFO L354 Elim1Store]: treesize reduction 126, result has 17.1 percent of original size [2021-11-21 01:39:26,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 25960 treesize of output 25974 [2021-11-21 01:39:29,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:29,268 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-11-21 01:39:29,268 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 20 [2021-11-21 01:39:30,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:30,485 INFO L354 Elim1Store]: treesize reduction 11, result has 56.0 percent of original size [2021-11-21 01:39:30,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 44 [2021-11-21 01:39:31,204 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:31,484 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:32,041 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:32,433 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:32,862 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:33,039 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:33,519 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:33,641 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:35,310 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:35,554 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:35,962 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:36,176 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:36,477 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:36,611 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:37,070 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:37,308 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:39,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:39:39,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:39,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:39,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:39:39,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:39,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:39:39,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:39:39,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:39,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:39,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:39,164 INFO L244 Elim1Store]: Index analysis took 105 ms [2021-11-21 01:39:39,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 1252 treesize of output 798 [2021-11-21 01:39:39,869 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:41,058 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:41,416 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:42,026 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:42,341 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:43,093 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:43,345 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:45,556 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:45,709 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:45,908 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:46,037 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:46,331 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:46,579 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:46,863 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:47,072 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:47,268 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:39:54,437 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-11-21 01:39:54,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4286 treesize of output 4294 [2021-11-21 01:39:55,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:55,245 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2021-11-21 01:39:55,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:55,405 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 25 treesize of output 15 [2021-11-21 01:39:56,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:56,276 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-11-21 01:39:56,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 32 [2021-11-21 01:39:56,600 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:40:06,815 INFO L190 IndexEqualityManager]: detected not equals via solver