./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.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_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/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_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/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_5f63cf46-d205-4d47-b28e-5360c6050cb8/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 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:48:06,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:48:06,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:48:06,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:48:06,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:48:06,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:48:06,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:48:06,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:48:06,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:48:06,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:48:06,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:48:06,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:48:06,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:48:06,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:48:06,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:48:06,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:48:06,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:48:06,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:48:06,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:48:06,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:48:06,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:48:06,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:48:06,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:48:06,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:48:06,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:48:06,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:48:06,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:48:06,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:48:06,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:48:06,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:48:06,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:48:06,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:48:06,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:48:06,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:48:06,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:48:06,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:48:06,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:48:06,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:48:06,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:48:06,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:48:06,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:48:06,985 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:48:07,028 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:48:07,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:48:07,029 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:48:07,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:48:07,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:48:07,037 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:48:07,038 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:48:07,038 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:48:07,038 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:48:07,038 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:48:07,039 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:48:07,040 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:48:07,040 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:48:07,040 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:48:07,040 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:48:07,041 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:48:07,041 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:48:07,041 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:48:07,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:48:07,043 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:48:07,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:48:07,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:48:07,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:48:07,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:48:07,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:48:07,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:48:07,046 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:48:07,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:48:07,046 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:48:07,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:48:07,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:48:07,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:48:07,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:48:07,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:48:07,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:48:07,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:48:07,048 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:48:07,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:48:07,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:48:07,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:48:07,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:48:07,049 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_5f63cf46-d205-4d47-b28e-5360c6050cb8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b [2021-11-20 23:48:07,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:48:07,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:48:07,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:48:07,401 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:48:07,402 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:48:07,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2021-11-20 23:48:07,484 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/data/9847db79d/6384322764cf4060b2e4fb836dd48e3c/FLAG6d71c9aa4 [2021-11-20 23:48:08,190 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:48:08,191 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2021-11-20 23:48:08,223 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/data/9847db79d/6384322764cf4060b2e4fb836dd48e3c/FLAG6d71c9aa4 [2021-11-20 23:48:08,387 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/data/9847db79d/6384322764cf4060b2e4fb836dd48e3c [2021-11-20 23:48:08,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:48:08,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:48:08,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:48:08,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:48:08,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:48:08,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:48:08" (1/1) ... [2021-11-20 23:48:08,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b95a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:08, skipping insertion in model container [2021-11-20 23:48:08,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:48:08" (1/1) ... [2021-11-20 23:48:08,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:48:08,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:48:08,924 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_5f63cf46-d205-4d47-b28e-5360c6050cb8/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[33021,33034] [2021-11-20 23:48:09,096 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_5f63cf46-d205-4d47-b28e-5360c6050cb8/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[45234,45247] [2021-11-20 23:48:09,127 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:48:09,136 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:48:09,163 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_5f63cf46-d205-4d47-b28e-5360c6050cb8/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[33021,33034] [2021-11-20 23:48:09,211 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_5f63cf46-d205-4d47-b28e-5360c6050cb8/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[45234,45247] [2021-11-20 23:48:09,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:48:09,278 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:48:09,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:09 WrapperNode [2021-11-20 23:48:09,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:48:09,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:48:09,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:48:09,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:48:09,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:09" (1/1) ... [2021-11-20 23:48:09,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:09" (1/1) ... [2021-11-20 23:48:09,448 INFO L137 Inliner]: procedures = 177, calls = 348, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1151 [2021-11-20 23:48:09,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:48:09,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:48:09,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:48:09,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:48:09,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:09" (1/1) ... [2021-11-20 23:48:09,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:09" (1/1) ... [2021-11-20 23:48:09,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:09" (1/1) ... [2021-11-20 23:48:09,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:09" (1/1) ... [2021-11-20 23:48:09,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:09" (1/1) ... [2021-11-20 23:48:09,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:09" (1/1) ... [2021-11-20 23:48:09,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:09" (1/1) ... [2021-11-20 23:48:09,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:48:09,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:48:09,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:48:09,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:48:09,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:09" (1/1) ... [2021-11-20 23:48:09,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:48:09,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:48:09,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:48:09,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:48:09,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:48:09,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 23:48:09,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 23:48:09,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:48:09,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:48:09,690 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:48:09,690 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-11-20 23:48:09,690 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-11-20 23:48:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:48:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:48:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:48:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:48:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 23:48:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:48:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:48:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:48:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:48:09,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:48:09,997 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:48:09,999 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:48:11,229 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:48:11,750 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:48:11,751 INFO L301 CfgBuilder]: Removed 71 assume(true) statements. [2021-11-20 23:48:11,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:48:11 BoogieIcfgContainer [2021-11-20 23:48:11,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:48:11,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:48:11,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:48:11,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:48:11,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:48:08" (1/3) ... [2021-11-20 23:48:11,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2172fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:48:11, skipping insertion in model container [2021-11-20 23:48:11,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:09" (2/3) ... [2021-11-20 23:48:11,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2172fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:48:11, skipping insertion in model container [2021-11-20 23:48:11,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:48:11" (3/3) ... [2021-11-20 23:48:11,768 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test8-2.i [2021-11-20 23:48:11,774 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:48:11,774 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 23:48:11,836 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:48:11,848 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:48:11,848 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 23:48:11,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 136 states have (on average 1.7941176470588236) internal successors, (244), 153 states have internal predecessors, (244), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-20 23:48:11,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 23:48:11,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:11,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:48:11,882 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:11,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:11,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1416523053, now seen corresponding path program 1 times [2021-11-20 23:48:11,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:11,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004802140] [2021-11-20 23:48:11,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:11,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:12,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:48:12,079 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:12,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004802140] [2021-11-20 23:48:12,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004802140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:12,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:12,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:48:12,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928086254] [2021-11-20 23:48:12,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:12,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:48:12,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:48:12,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:48:12,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:48:12,116 INFO L87 Difference]: Start difference. First operand has 162 states, 136 states have (on average 1.7941176470588236) internal successors, (244), 153 states have internal predecessors, (244), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:13,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:48:13,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:13,876 INFO L93 Difference]: Finished difference Result 323 states and 584 transitions. [2021-11-20 23:48:13,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:48:13,878 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 23:48:13,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:13,888 INFO L225 Difference]: With dead ends: 323 [2021-11-20 23:48:13,889 INFO L226 Difference]: Without dead ends: 146 [2021-11-20 23:48:13,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:48:13,897 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:13,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 188 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 23:48:13,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-20 23:48:13,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-11-20 23:48:13,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 121 states have (on average 1.2727272727272727) internal successors, (154), 137 states have internal predecessors, (154), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-20 23:48:13,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 194 transitions. [2021-11-20 23:48:13,955 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 194 transitions. Word has length 8 [2021-11-20 23:48:13,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:48:13,956 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 194 transitions. [2021-11-20 23:48:13,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:13,956 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 194 transitions. [2021-11-20 23:48:13,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:48:13,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:13,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:48:13,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:48:13,959 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:13,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:13,960 INFO L85 PathProgramCache]: Analyzing trace with hash -2072407008, now seen corresponding path program 1 times [2021-11-20 23:48:13,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:13,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666655155] [2021-11-20 23:48:13,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:13,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:14,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:48:14,037 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:14,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666655155] [2021-11-20 23:48:14,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666655155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:14,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:14,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:48:14,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486638793] [2021-11-20 23:48:14,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:14,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:48:14,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:48:14,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:48:14,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:48:14,055 INFO L87 Difference]: Start difference. First operand 146 states and 194 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:15,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:15,446 INFO L93 Difference]: Finished difference Result 293 states and 390 transitions. [2021-11-20 23:48:15,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:48:15,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 23:48:15,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:15,451 INFO L225 Difference]: With dead ends: 293 [2021-11-20 23:48:15,451 INFO L226 Difference]: Without dead ends: 202 [2021-11-20 23:48:15,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:48:15,454 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 60 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:15,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 484 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 23:48:15,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-20 23:48:15,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 148. [2021-11-20 23:48:15,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 123 states have (on average 1.2682926829268293) internal successors, (156), 139 states have internal predecessors, (156), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-20 23:48:15,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 196 transitions. [2021-11-20 23:48:15,480 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 196 transitions. Word has length 20 [2021-11-20 23:48:15,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:48:15,481 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 196 transitions. [2021-11-20 23:48:15,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:15,481 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 196 transitions. [2021-11-20 23:48:15,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 23:48:15,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:15,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:48:15,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:48:15,484 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:15,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:15,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1044851722, now seen corresponding path program 1 times [2021-11-20 23:48:15,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:15,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380611790] [2021-11-20 23:48:15,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:15,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:15,512 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:48:15,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1786665714] [2021-11-20 23:48:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:15,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:48:15,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:48:15,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:48:15,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:48:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:15,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:48:15,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:48:15,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:48:15,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:48:15,987 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:15,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380611790] [2021-11-20 23:48:15,988 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:48:15,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786665714] [2021-11-20 23:48:15,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786665714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:15,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:15,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:48:15,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942236027] [2021-11-20 23:48:15,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:15,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:48:15,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:48:15,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:48:15,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:48:15,991 INFO L87 Difference]: Start difference. First operand 148 states and 196 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:16,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:16,876 INFO L93 Difference]: Finished difference Result 341 states and 444 transitions. [2021-11-20 23:48:16,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:48:16,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-20 23:48:16,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:16,881 INFO L225 Difference]: With dead ends: 341 [2021-11-20 23:48:16,881 INFO L226 Difference]: Without dead ends: 196 [2021-11-20 23:48:16,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:48:16,884 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 45 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:16,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 341 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 23:48:16,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-20 23:48:16,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 193. [2021-11-20 23:48:16,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 167 states have (on average 1.2275449101796407) internal successors, (205), 183 states have internal predecessors, (205), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-20 23:48:16,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 247 transitions. [2021-11-20 23:48:16,905 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 247 transitions. Word has length 32 [2021-11-20 23:48:16,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:48:16,905 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 247 transitions. [2021-11-20 23:48:16,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:16,905 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 247 transitions. [2021-11-20 23:48:16,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 23:48:16,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:16,907 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:48:16,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:48:17,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:48:17,136 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:17,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:17,137 INFO L85 PathProgramCache]: Analyzing trace with hash -868254590, now seen corresponding path program 1 times [2021-11-20 23:48:17,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:17,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478425969] [2021-11-20 23:48:17,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:17,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:17,174 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:48:17,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366188241] [2021-11-20 23:48:17,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:17,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:48:17,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:48:17,179 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:48:17,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:48:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:18,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:48:18,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:48:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:48:18,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:48:18,217 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:18,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478425969] [2021-11-20 23:48:18,217 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:48:18,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366188241] [2021-11-20 23:48:18,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366188241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:18,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:18,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:48:18,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380304066] [2021-11-20 23:48:18,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:18,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:48:18,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:48:18,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:48:18,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:48:18,220 INFO L87 Difference]: Start difference. First operand 193 states and 247 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:48:18,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:18,803 INFO L93 Difference]: Finished difference Result 372 states and 482 transitions. [2021-11-20 23:48:18,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:48:18,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2021-11-20 23:48:18,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:18,815 INFO L225 Difference]: With dead ends: 372 [2021-11-20 23:48:18,815 INFO L226 Difference]: Without dead ends: 195 [2021-11-20 23:48:18,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:48:18,817 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 1 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:18,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 518 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:48:18,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-20 23:48:18,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-20 23:48:18,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 168 states have (on average 1.2321428571428572) internal successors, (207), 185 states have internal predecessors, (207), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2021-11-20 23:48:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 250 transitions. [2021-11-20 23:48:18,851 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 250 transitions. Word has length 45 [2021-11-20 23:48:18,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:48:18,852 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 250 transitions. [2021-11-20 23:48:18,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:48:18,853 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 250 transitions. [2021-11-20 23:48:18,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-20 23:48:18,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:18,858 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:48:18,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:48:19,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:48:19,063 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:19,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:19,064 INFO L85 PathProgramCache]: Analyzing trace with hash -908612650, now seen corresponding path program 1 times [2021-11-20 23:48:19,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:19,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498803518] [2021-11-20 23:48:19,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:19,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:19,084 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:48:19,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1976536907] [2021-11-20 23:48:19,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:19,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:48:19,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:48:19,086 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:48:19,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f63cf46-d205-4d47-b28e-5360c6050cb8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:48:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:19,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 23:48:19,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:48:20,089 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:48:20,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:48:20,331 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:48:20,332 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:20,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498803518] [2021-11-20 23:48:20,333 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:48:20,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976536907] [2021-11-20 23:48:20,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976536907] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:48:20,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [850994741] [2021-11-20 23:48:20,359 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2021-11-20 23:48:20,359 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:48:20,364 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:48:20,370 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:48:20,370 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:48:20,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:20,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-20 23:48:20,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-20 23:48:20,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-20 23:48:20,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:20,573 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-20 23:48:20,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-20 23:48:20,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:20,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:20,629 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:48:20,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-20 23:48:20,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:20,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:20,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:20,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:20,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:20,819 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-20 23:48:20,819 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 [2021-11-20 23:48:20,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:20,874 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 [2021-11-20 23:48:20,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:20,899 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 [2021-11-20 23:48:20,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:20,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:20,949 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-20 23:48:20,950 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 [2021-11-20 23:48:21,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:21,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:21,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:21,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:21,054 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-20 23:48:21,058 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 [2021-11-20 23:48:22,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-20 23:48:22,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-20 23:48:22,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 77 [2021-11-20 23:48:22,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 74 [2021-11-20 23:48:22,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-11-20 23:48:22,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:22,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-11-20 23:48:23,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 19 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 86 [2021-11-20 23:48:23,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-20 23:48:23,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,179 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:48:23,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 75 treesize of output 77 [2021-11-20 23:48:23,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 115 [2021-11-20 23:48:23,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,395 INFO L354 Elim1Store]: treesize reduction 194, result has 22.4 percent of original size [2021-11-20 23:48:23,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 127 treesize of output 163 [2021-11-20 23:48:23,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:23,456 INFO L354 Elim1Store]: treesize reduction 120, result has 14.9 percent of original size [2021-11-20 23:48:23,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 145 treesize of output 156 [2021-11-20 23:48:24,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 23:48:24,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-20 23:48:24,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-20 23:48:24,087 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-20 23:48:24,088 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 [2021-11-20 23:48:24,113 INFO L354 Elim1Store]: treesize reduction 34, result has 22.7 percent of original size [2021-11-20 23:48:24,113 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 [2021-11-20 23:48:24,136 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-20 23:48:24,136 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 [2021-11-20 23:48:24,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-20 23:48:24,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 23:48:24,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-20 23:48:24,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-20 23:48:24,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 26 [2021-11-20 23:48:24,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-11-20 23:48:24,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 26 [2021-11-20 23:48:24,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-20 23:48:24,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:24,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-11-20 23:48:32,239 WARN L227 SmtUtils]: Spent 7.29s on a formula simplification. DAG size of input: 66 DAG size of output: 32 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:48:32,239 INFO L354 Elim1Store]: treesize reduction 348, result has 15.7 percent of original size [2021-11-20 23:48:32,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 2847 treesize of output 2324 [2021-11-20 23:48:32,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:41,266 WARN L227 SmtUtils]: Spent 8.98s on a formula simplification. DAG size of input: 90 DAG size of output: 46 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:48:41,267 INFO L354 Elim1Store]: treesize reduction 262, result has 32.6 percent of original size [2021-11-20 23:48:41,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 2948 treesize of output 2666 [2021-11-20 23:48:53,336 WARN L227 SmtUtils]: Spent 11.85s on a formula simplification. DAG size of input: 251 DAG size of output: 142 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:48:53,338 INFO L354 Elim1Store]: treesize reduction 2750, result has 29.6 percent of original size [2021-11-20 23:48:53,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 2916 treesize of output 2686 [2021-11-20 23:48:53,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:53,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:53,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:54,934 INFO L354 Elim1Store]: treesize reduction 188, result has 20.0 percent of original size [2021-11-20 23:48:54,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 25954 treesize of output 25985 [2021-11-20 23:48:55,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:55,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:55,875 INFO L354 Elim1Store]: treesize reduction 126, result has 17.1 percent of original size [2021-11-20 23:48:55,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 25964 treesize of output 25978 [2021-11-20 23:48:58,462 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:48:58,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:58,803 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-20 23:48:58,803 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 38 treesize of output 20 [2021-11-20 23:48:59,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:48:59,523 INFO L354 Elim1Store]: treesize reduction 15, result has 48.3 percent of original size [2021-11-20 23:48:59,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 46 [2021-11-20 23:49:01,954 INFO L244 Elim1Store]: Index analysis took 303 ms [2021-11-20 23:49:01,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:49:04,560 INFO L354 Elim1Store]: treesize reduction 9002, result has 44.8 percent of original size [2021-11-20 23:49:04,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 11485 treesize of output 16761 [2021-11-20 23:49:07,768 INFO L244 Elim1Store]: Index analysis took 450 ms [2021-11-20 23:49:07,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:49:12,476 INFO L354 Elim1Store]: treesize reduction 492, result has 94.5 percent of original size [2021-11-20 23:49:12,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 11997 treesize of output 18265 [2021-11-20 23:49:50,937 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-11-20 23:49:50,937 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 8621 treesize of output 8629 [2021-11-20 23:49:51,712 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:49:52,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:49:52,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:49:52,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:49:52,269 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 34 treesize of output 16 [2021-11-20 23:49:53,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:49:53,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:49:54,195 INFO L354 Elim1Store]: treesize reduction 20, result has 62.3 percent of original size [2021-11-20 23:49:54,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 73 treesize of output 83 [2021-11-20 23:49:55,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:49:55,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:49:55,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:49:55,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 42 [2021-11-20 23:50:06,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:50:06,459 INFO L190 IndexEqualityManager]: detected not equals via solver