./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/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_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:13:54,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:13:54,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:13:54,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:13:54,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:13:54,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:13:54,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:13:54,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:13:54,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:13:54,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:13:54,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:13:54,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:13:54,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:13:54,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:13:54,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:13:54,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:13:54,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:13:54,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:13:54,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:13:54,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:13:54,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:13:54,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:13:54,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:13:54,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:13:54,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:13:54,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:13:54,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:13:54,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:13:54,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:13:54,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:13:54,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:13:54,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:13:54,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:13:54,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:13:54,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:13:54,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:13:54,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:13:54,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:13:54,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:13:54,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:13:54,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:13:54,182 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-20 23:13:54,227 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:13:54,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:13:54,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:13:54,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:13:54,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:13:54,229 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:13:54,230 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:13:54,230 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:13:54,230 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:13:54,230 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:13:54,231 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:13:54,232 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:13:54,232 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:13:54,232 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:13:54,232 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:13:54,233 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:13:54,233 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:13:54,233 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:13:54,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:13:54,234 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:13:54,234 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 23:13:54,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:13:54,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:13:54,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:13:54,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:13:54,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:13:54,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:13:54,238 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-20 23:13:54,238 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:13:54,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:13:54,239 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:13:54,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:13:54,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:13:54,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:13:54,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:13:54,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:13:54,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:13:54,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:13:54,241 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:13:54,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:13:54,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:13:54,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:13:54,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:13:54,242 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_897826ea-97c6-45ae-abaf-1c6c8f77c8af/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 [2021-11-20 23:13:54,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:13:54,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:13:54,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:13:54,589 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:13:54,590 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:13:54,591 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2021-11-20 23:13:54,661 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/data/c8ea42bd8/56785dc454ed4505bd31eb5ae5759a33/FLAG6978180e5 [2021-11-20 23:13:55,288 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:13:55,289 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2021-11-20 23:13:55,318 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/data/c8ea42bd8/56785dc454ed4505bd31eb5ae5759a33/FLAG6978180e5 [2021-11-20 23:13:55,519 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/data/c8ea42bd8/56785dc454ed4505bd31eb5ae5759a33 [2021-11-20 23:13:55,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:13:55,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:13:55,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:13:55,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:13:55,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:13:55,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:13:55" (1/1) ... [2021-11-20 23:13:55,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fefeefc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:55, skipping insertion in model container [2021-11-20 23:13:55,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:13:55" (1/1) ... [2021-11-20 23:13:55,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:13:55,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:13:56,196 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_897826ea-97c6-45ae-abaf-1c6c8f77c8af/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44118,44131] [2021-11-20 23:13:56,205 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_897826ea-97c6-45ae-abaf-1c6c8f77c8af/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44660,44673] [2021-11-20 23:13:56,320 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_897826ea-97c6-45ae-abaf-1c6c8f77c8af/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56247,56260] [2021-11-20 23:13:56,322 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_897826ea-97c6-45ae-abaf-1c6c8f77c8af/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56368,56381] [2021-11-20 23:13:56,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:13:56,352 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:13:56,409 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_897826ea-97c6-45ae-abaf-1c6c8f77c8af/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44118,44131] [2021-11-20 23:13:56,412 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_897826ea-97c6-45ae-abaf-1c6c8f77c8af/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44660,44673] [2021-11-20 23:13:56,499 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_897826ea-97c6-45ae-abaf-1c6c8f77c8af/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56247,56260] [2021-11-20 23:13:56,502 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_897826ea-97c6-45ae-abaf-1c6c8f77c8af/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56368,56381] [2021-11-20 23:13:56,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:13:56,584 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:13:56,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:56 WrapperNode [2021-11-20 23:13:56,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:13:56,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:13:56,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:13:56,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:13:56,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:56" (1/1) ... [2021-11-20 23:13:56,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:56" (1/1) ... [2021-11-20 23:13:56,759 INFO L137 Inliner]: procedures = 282, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1050 [2021-11-20 23:13:56,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:13:56,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:13:56,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:13:56,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:13:56,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:56" (1/1) ... [2021-11-20 23:13:56,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:56" (1/1) ... [2021-11-20 23:13:56,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:56" (1/1) ... [2021-11-20 23:13:56,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:56" (1/1) ... [2021-11-20 23:13:56,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:56" (1/1) ... [2021-11-20 23:13:56,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:56" (1/1) ... [2021-11-20 23:13:56,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:56" (1/1) ... [2021-11-20 23:13:56,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:13:56,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:13:56,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:13:56,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:13:56,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:56" (1/1) ... [2021-11-20 23:13:56,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:13:56,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:13:56,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:13:56,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:13:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:13:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 23:13:56,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:13:56,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:13:56,990 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-11-20 23:13:56,990 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-11-20 23:13:56,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:13:56,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 23:13:56,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 23:13:56,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:13:56,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:13:56,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:13:56,991 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-11-20 23:13:56,991 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-11-20 23:13:56,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:13:56,992 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-11-20 23:13:56,993 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-11-20 23:13:56,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:13:56,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:13:56,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:13:57,273 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:13:57,275 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:13:58,234 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:13:58,590 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:13:58,591 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-20 23:13:58,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:58 BoogieIcfgContainer [2021-11-20 23:13:58,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:13:58,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:13:58,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:13:58,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:13:58,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:13:55" (1/3) ... [2021-11-20 23:13:58,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c45b081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:13:58, skipping insertion in model container [2021-11-20 23:13:58,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:56" (2/3) ... [2021-11-20 23:13:58,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c45b081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:13:58, skipping insertion in model container [2021-11-20 23:13:58,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:58" (3/3) ... [2021-11-20 23:13:58,609 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test6-1.i [2021-11-20 23:13:58,614 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:13:58,614 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-20 23:13:58,676 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:13:58,685 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 23:13:58,685 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-20 23:13:58,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 158 states, 126 states have (on average 1.746031746031746) internal successors, (220), 140 states have internal predecessors, (220), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-20 23:13:58,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-20 23:13:58,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:58,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-20 23:13:58,709 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-20 23:13:58,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:58,714 INFO L85 PathProgramCache]: Analyzing trace with hash 27392344, now seen corresponding path program 1 times [2021-11-20 23:13:58,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:13:58,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126059835] [2021-11-20 23:13:58,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:58,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:13:58,882 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:13:58,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [830449618] [2021-11-20 23:13:58,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:58,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:13:58,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:13:58,888 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:13:58,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:13:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:59,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 23:13:59,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:13:59,196 INFO L354 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2021-11-20 23:13:59,198 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 50 [2021-11-20 23:13:59,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-20 23:13:59,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-20 23:13:59,371 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:13:59,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-20 23:14:11,492 WARN L227 SmtUtils]: Spent 12.09s on a formula simplification. DAG size of input: 24 DAG size of output: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:14:11,617 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:14:11,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 46 [2021-11-20 23:14:11,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-20 23:14:11,663 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 23:14:11,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:14:11,664 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:11,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126059835] [2021-11-20 23:14:11,665 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:14:11,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830449618] [2021-11-20 23:14:11,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830449618] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:11,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:11,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:14:11,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477213771] [2021-11-20 23:14:11,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:11,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:14:11,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:11,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:14:11,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:14:11,705 INFO L87 Difference]: Start difference. First operand has 158 states, 126 states have (on average 1.746031746031746) internal successors, (220), 140 states have internal predecessors, (220), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 23:14:13,198 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:14:13,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:13,423 INFO L93 Difference]: Finished difference Result 318 states and 501 transitions. [2021-11-20 23:14:13,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:14:13,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-11-20 23:14:13,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:13,440 INFO L225 Difference]: With dead ends: 318 [2021-11-20 23:14:13,440 INFO L226 Difference]: Without dead ends: 154 [2021-11-20 23:14:13,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:14:13,448 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 2 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:13,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 434 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 55 Unchecked, 1.7s Time] [2021-11-20 23:14:13,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-20 23:14:13,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2021-11-20 23:14:13,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 125 states have (on average 1.256) internal successors, (157), 139 states have internal predecessors, (157), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-20 23:14:13,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 177 transitions. [2021-11-20 23:14:13,505 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 177 transitions. Word has length 4 [2021-11-20 23:14:13,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:13,505 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 177 transitions. [2021-11-20 23:14:13,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 23:14:13,506 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 177 transitions. [2021-11-20 23:14:13,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:14:13,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:13,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:13,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-20 23:14:13,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:13,729 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-20 23:14:13,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:13,729 INFO L85 PathProgramCache]: Analyzing trace with hash -646465482, now seen corresponding path program 1 times [2021-11-20 23:14:13,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:13,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104504342] [2021-11-20 23:14:13,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:13,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:13,772 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:14:13,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [608118974] [2021-11-20 23:14:13,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:13,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:13,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:14:13,776 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:14:13,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:14:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:13,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:14:13,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:14,068 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 23:14:14,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:14:14,070 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:14,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104504342] [2021-11-20 23:14:14,070 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:14:14,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608118974] [2021-11-20 23:14:14,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608118974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:14,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:14,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:14:14,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304485868] [2021-11-20 23:14:14,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:14,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:14:14,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:14,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:14:14,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:14:14,076 INFO L87 Difference]: Start difference. First operand 153 states and 177 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:15,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:15,926 INFO L93 Difference]: Finished difference Result 261 states and 302 transitions. [2021-11-20 23:14:15,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:14:15,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-20 23:14:15,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:15,943 INFO L225 Difference]: With dead ends: 261 [2021-11-20 23:14:15,943 INFO L226 Difference]: Without dead ends: 259 [2021-11-20 23:14:15,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 23:14:15,946 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 106 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:15,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 443 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-20 23:14:15,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-20 23:14:15,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 249. [2021-11-20 23:14:15,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 216 states have (on average 1.25) internal successors, (270), 231 states have internal predecessors, (270), 14 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-20 23:14:15,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 298 transitions. [2021-11-20 23:14:15,979 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 298 transitions. Word has length 18 [2021-11-20 23:14:15,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:15,980 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 298 transitions. [2021-11-20 23:14:15,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:15,980 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 298 transitions. [2021-11-20 23:14:15,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 23:14:15,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:15,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:16,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:14:16,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-20 23:14:16,200 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-20 23:14:16,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:16,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1434406572, now seen corresponding path program 1 times [2021-11-20 23:14:16,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:16,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271330240] [2021-11-20 23:14:16,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:16,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:16,225 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:14:16,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [845664045] [2021-11-20 23:14:16,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:16,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:16,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:14:16,227 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:14:16,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:14:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:16,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:14:16,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:16,499 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 23:14:16,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:14:16,499 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:16,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271330240] [2021-11-20 23:14:16,500 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:14:16,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845664045] [2021-11-20 23:14:16,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845664045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:16,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:16,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:14:16,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356287411] [2021-11-20 23:14:16,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:16,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:14:16,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:16,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:14:16,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:14:16,513 INFO L87 Difference]: Start difference. First operand 249 states and 298 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:18,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:18,036 INFO L93 Difference]: Finished difference Result 441 states and 532 transitions. [2021-11-20 23:14:18,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:14:18,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-20 23:14:18,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:18,044 INFO L225 Difference]: With dead ends: 441 [2021-11-20 23:14:18,044 INFO L226 Difference]: Without dead ends: 439 [2021-11-20 23:14:18,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 23:14:18,046 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 147 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:18,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 451 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 23:14:18,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-20 23:14:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 428. [2021-11-20 23:14:18,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 384 states have (on average 1.25) internal successors, (480), 400 states have internal predecessors, (480), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2021-11-20 23:14:18,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 529 transitions. [2021-11-20 23:14:18,112 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 529 transitions. Word has length 19 [2021-11-20 23:14:18,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:18,112 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 529 transitions. [2021-11-20 23:14:18,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:18,113 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 529 transitions. [2021-11-20 23:14:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 23:14:18,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:18,115 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] [2021-11-20 23:14:18,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:14:18,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:18,341 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-20 23:14:18,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:18,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1558573003, now seen corresponding path program 1 times [2021-11-20 23:14:18,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:18,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815828912] [2021-11-20 23:14:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:18,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:18,442 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 23:14:18,442 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:18,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815828912] [2021-11-20 23:14:18,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815828912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:18,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:18,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:14:18,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816319395] [2021-11-20 23:14:18,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:18,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:14:18,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:18,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:14:18,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:14:18,445 INFO L87 Difference]: Start difference. First operand 428 states and 529 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 23:14:19,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:19,835 INFO L93 Difference]: Finished difference Result 682 states and 842 transitions. [2021-11-20 23:14:19,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:14:19,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-11-20 23:14:19,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:19,844 INFO L225 Difference]: With dead ends: 682 [2021-11-20 23:14:19,844 INFO L226 Difference]: Without dead ends: 562 [2021-11-20 23:14:19,845 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 23:14:19,846 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 56 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:19,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 412 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:14:19,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-11-20 23:14:19,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 428. [2021-11-20 23:14:19,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 384 states have (on average 1.2473958333333333) internal successors, (479), 400 states have internal predecessors, (479), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2021-11-20 23:14:19,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 528 transitions. [2021-11-20 23:14:19,878 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 528 transitions. Word has length 24 [2021-11-20 23:14:19,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:19,879 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 528 transitions. [2021-11-20 23:14:19,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 23:14:19,879 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 528 transitions. [2021-11-20 23:14:19,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 23:14:19,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:19,881 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] [2021-11-20 23:14:19,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:14:19,881 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-20 23:14:19,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:19,882 INFO L85 PathProgramCache]: Analyzing trace with hash -2115465486, now seen corresponding path program 1 times [2021-11-20 23:14:19,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:19,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373618335] [2021-11-20 23:14:19,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:19,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:19,901 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:14:19,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615893814] [2021-11-20 23:14:19,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:19,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:19,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:14:19,906 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:14:19,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 23:14:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:20,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:14:20,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:20,164 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 23:14:20,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:14:20,164 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:20,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373618335] [2021-11-20 23:14:20,165 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:14:20,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615893814] [2021-11-20 23:14:20,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615893814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:20,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:20,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-20 23:14:20,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534558432] [2021-11-20 23:14:20,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:20,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:14:20,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:20,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:14:20,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:20,170 INFO L87 Difference]: Start difference. First operand 428 states and 528 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:14:21,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:21,699 INFO L93 Difference]: Finished difference Result 454 states and 548 transitions. [2021-11-20 23:14:21,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:21,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-11-20 23:14:21,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:21,709 INFO L225 Difference]: With dead ends: 454 [2021-11-20 23:14:21,709 INFO L226 Difference]: Without dead ends: 453 [2021-11-20 23:14:21,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 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 23:14:21,711 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 112 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:21,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 304 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 23:14:21,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-11-20 23:14:21,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 443. [2021-11-20 23:14:21,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 394 states have (on average 1.2436548223350254) internal successors, (490), 411 states have internal predecessors, (490), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2021-11-20 23:14:21,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 545 transitions. [2021-11-20 23:14:21,743 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 545 transitions. Word has length 27 [2021-11-20 23:14:21,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:21,743 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 545 transitions. [2021-11-20 23:14:21,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:14:21,744 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 545 transitions. [2021-11-20 23:14:21,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 23:14:21,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:21,745 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] [2021-11-20 23:14:21,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:14:21,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:21,970 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-20 23:14:21,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:21,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1154920565, now seen corresponding path program 1 times [2021-11-20 23:14:21,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:21,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014617237] [2021-11-20 23:14:21,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:21,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:21,998 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:14:22,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399271510] [2021-11-20 23:14:22,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:22,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:22,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:14:22,003 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:14:22,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 23:14:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:22,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:14:22,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:22,271 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 23:14:22,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:14:22,272 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:22,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014617237] [2021-11-20 23:14:22,272 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:14:22,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399271510] [2021-11-20 23:14:22,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399271510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:22,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:22,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-20 23:14:22,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475057327] [2021-11-20 23:14:22,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:22,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:14:22,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:22,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:14:22,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:22,277 INFO L87 Difference]: Start difference. First operand 443 states and 545 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:14:23,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:23,265 INFO L93 Difference]: Finished difference Result 443 states and 545 transitions. [2021-11-20 23:14:23,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:23,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-11-20 23:14:23,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:23,274 INFO L225 Difference]: With dead ends: 443 [2021-11-20 23:14:23,274 INFO L226 Difference]: Without dead ends: 442 [2021-11-20 23:14:23,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 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 23:14:23,276 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 143 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:23,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 147 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 23:14:23,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-11-20 23:14:23,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-11-20 23:14:23,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 394 states have (on average 1.2385786802030456) internal successors, (488), 410 states have internal predecessors, (488), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2021-11-20 23:14:23,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 543 transitions. [2021-11-20 23:14:23,304 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 543 transitions. Word has length 28 [2021-11-20 23:14:23,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:23,304 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 543 transitions. [2021-11-20 23:14:23,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:14:23,305 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 543 transitions. [2021-11-20 23:14:23,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 23:14:23,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:23,306 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] [2021-11-20 23:14:23,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 23:14:23,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:23,521 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-20 23:14:23,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:23,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1356353724, now seen corresponding path program 1 times [2021-11-20 23:14:23,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:23,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380240329] [2021-11-20 23:14:23,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:23,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:23,540 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:14:23,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [32869396] [2021-11-20 23:14:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:23,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:23,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:14:23,541 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:14:23,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 23:14:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:23,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:14:23,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:23,894 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 23:14:23,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:14:23,894 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:23,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380240329] [2021-11-20 23:14:23,895 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:14:23,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32869396] [2021-11-20 23:14:23,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32869396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:23,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:23,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:14:23,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962680661] [2021-11-20 23:14:23,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:23,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:14:23,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:23,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:14:23,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:23,902 INFO L87 Difference]: Start difference. First operand 442 states and 543 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 23:14:25,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:14:25,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:25,613 INFO L93 Difference]: Finished difference Result 814 states and 992 transitions. [2021-11-20 23:14:25,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:25,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2021-11-20 23:14:25,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:25,622 INFO L225 Difference]: With dead ends: 814 [2021-11-20 23:14:25,622 INFO L226 Difference]: Without dead ends: 377 [2021-11-20 23:14:25,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 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 23:14:25,625 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 49 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:25,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 284 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 23:14:25,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-20 23:14:25,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 368. [2021-11-20 23:14:25,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 326 states have (on average 1.2147239263803682) internal successors, (396), 341 states have internal predecessors, (396), 21 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (24), 18 states have call predecessors, (24), 21 states have call successors, (24) [2021-11-20 23:14:25,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 441 transitions. [2021-11-20 23:14:25,652 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 441 transitions. Word has length 28 [2021-11-20 23:14:25,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:25,653 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 441 transitions. [2021-11-20 23:14:25,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 23:14:25,653 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 441 transitions. [2021-11-20 23:14:25,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 23:14:25,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:25,655 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:25,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 23:14:25,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-20 23:14:25,869 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-20 23:14:25,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:25,869 INFO L85 PathProgramCache]: Analyzing trace with hash 227049609, now seen corresponding path program 1 times [2021-11-20 23:14:25,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:25,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416581330] [2021-11-20 23:14:25,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:25,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:25,881 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:14:25,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1429605265] [2021-11-20 23:14:25,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:25,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:25,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:14:25,882 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:14:25,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 23:14:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:26,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:14:26,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:26,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:26,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:26,561 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:26,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416581330] [2021-11-20 23:14:26,561 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:14:26,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429605265] [2021-11-20 23:14:26,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429605265] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:14:26,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1597025427] [2021-11-20 23:14:26,583 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-20 23:14:26,584 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:14:26,589 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:14:26,596 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:14:26,596 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:14:26,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:26,713 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-20 23:14:26,713 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 23:14:26,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:26,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:26,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2021-11-20 23:14:26,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-20 23:14:26,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:26,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-20 23:14:26,878 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 15 treesize of output 1 [2021-11-20 23:14:26,921 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 15 treesize of output 1 [2021-11-20 23:14:27,139 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 23:14:27,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:27,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:27,223 INFO L354 Elim1Store]: treesize reduction 42, result has 42.5 percent of original size [2021-11-20 23:14:27,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 43 treesize of output 65 [2021-11-20 23:14:27,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-11-20 23:14:27,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:27,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:14:27,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2021-11-20 23:14:27,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:27,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:27,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:27,604 INFO L354 Elim1Store]: treesize reduction 70, result has 28.6 percent of original size [2021-11-20 23:14:27,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 case distinctions, treesize of input 37 treesize of output 61 [2021-11-20 23:14:27,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:27,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:27,689 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-20 23:14:27,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 38 [2021-11-20 23:14:27,784 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 23:14:28,242 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 19 treesize of output 1 [2021-11-20 23:14:28,276 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 19 treesize of output 1 [2021-11-20 23:14:28,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:28,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:28,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:28,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:28,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:28,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 77 treesize of output 69 [2021-11-20 23:14:28,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:28,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 76 [2021-11-20 23:14:30,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:30,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:30,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:30,936 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 23:14:30,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:30,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:30,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:30,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:30,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:30,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 95 treesize of output 89 [2021-11-20 23:14:30,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:30,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:30,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:30,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 88 treesize of output 82 [2021-11-20 23:14:31,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 77 [2021-11-20 23:14:31,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 85 [2021-11-20 23:14:31,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,228 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 23:14:31,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,393 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 23:14:31,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,493 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 23:14:31,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,614 INFO L354 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2021-11-20 23:14:31,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 114 treesize of output 104 [2021-11-20 23:14:31,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,676 INFO L354 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2021-11-20 23:14:31,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 97 [2021-11-20 23:14:31,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 96 [2021-11-20 23:14:31,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:31,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 88 [2021-11-20 23:14:32,283 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 25 treesize of output 1 [2021-11-20 23:14:32,300 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 23:14:32,306 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 25 treesize of output 1 [2021-11-20 23:14:32,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-20 23:14:32,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:14:32,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-20 23:14:32,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,556 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-11-20 23:14:32,557 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 3 case distinctions, treesize of input 76 treesize of output 70 [2021-11-20 23:14:32,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 43 [2021-11-20 23:14:32,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,684 INFO L354 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2021-11-20 23:14:32,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 23 [2021-11-20 23:14:32,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-20 23:14:32,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:32,811 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-11-20 23:14:32,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 28 [2021-11-20 23:14:33,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:33,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:33,320 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-11-20 23:14:33,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 32 [2021-11-20 23:14:33,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:33,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:33,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:33,393 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-20 23:14:33,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 23 [2021-11-20 23:14:33,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:33,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:33,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:33,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-20 23:14:33,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:33,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:33,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:33,456 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 23:14:33,457 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 1 case distinctions, treesize of input 76 treesize of output 58 [2021-11-20 23:14:33,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2021-11-20 23:14:33,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:33,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:33,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:33,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:33,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:33,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:33,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2021-11-20 23:14:33,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:33,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:33,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:33,587 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 28 treesize of output 10 [2021-11-20 23:14:33,938 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-20 23:14:33,939 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 306 treesize of output 272 [2021-11-20 23:14:33,958 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 287 treesize of output 283 [2021-11-20 23:14:33,978 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 298 treesize of output 294 [2021-11-20 23:14:36,155 INFO L197 IcfgInterpreter]: Interpreting procedure alt_bzero with input of size 89 for LOIs [2021-11-20 23:14:37,426 INFO L197 IcfgInterpreter]: Interpreting procedure alt_malloc with input of size 110 for LOIs [2021-11-20 23:14:38,611 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:14:42,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1597025427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:42,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:14:42,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [6, 7] total 32 [2021-11-20 23:14:42,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930554753] [2021-11-20 23:14:42,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:42,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 23:14:42,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:42,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 23:14:42,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2021-11-20 23:14:42,474 INFO L87 Difference]: Start difference. First operand 368 states and 441 transitions. Second operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 16 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:14:46,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:46,883 INFO L93 Difference]: Finished difference Result 725 states and 872 transitions. [2021-11-20 23:14:46,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:14:46,884 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 16 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-11-20 23:14:46,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:46,888 INFO L225 Difference]: With dead ends: 725 [2021-11-20 23:14:46,888 INFO L226 Difference]: Without dead ends: 365 [2021-11-20 23:14:46,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2021-11-20 23:14:46,891 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 9 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 446 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:46,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1031 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 448 Invalid, 0 Unknown, 446 Unchecked, 4.4s Time] [2021-11-20 23:14:46,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-20 23:14:46,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2021-11-20 23:14:46,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 323 states have (on average 1.2105263157894737) internal successors, (391), 337 states have internal predecessors, (391), 21 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (24), 18 states have call predecessors, (24), 21 states have call successors, (24) [2021-11-20 23:14:46,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 436 transitions. [2021-11-20 23:14:46,919 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 436 transitions. Word has length 34 [2021-11-20 23:14:46,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:46,919 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 436 transitions. [2021-11-20 23:14:46,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 16 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:14:46,920 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 436 transitions. [2021-11-20 23:14:46,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-20 23:14:46,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:46,921 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:46,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-20 23:14:47,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-20 23:14:47,149 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-20 23:14:47,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:47,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1472683514, now seen corresponding path program 1 times [2021-11-20 23:14:47,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:47,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395613088] [2021-11-20 23:14:47,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:47,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:47,181 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:14:47,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499415720] [2021-11-20 23:14:47,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:47,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:47,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:14:47,183 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:14:47,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 23:14:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:47,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:14:47,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:47,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:14:47,485 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:47,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395613088] [2021-11-20 23:14:47,485 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:14:47,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499415720] [2021-11-20 23:14:47,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499415720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:47,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:47,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:14:47,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108557059] [2021-11-20 23:14:47,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:47,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:14:47,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:47,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:14:47,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:14:47,488 INFO L87 Difference]: Start difference. First operand 365 states and 436 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 23:14:50,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:50,734 INFO L93 Difference]: Finished difference Result 664 states and 802 transitions. [2021-11-20 23:14:50,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:14:50,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2021-11-20 23:14:50,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:50,740 INFO L225 Difference]: With dead ends: 664 [2021-11-20 23:14:50,741 INFO L226 Difference]: Without dead ends: 662 [2021-11-20 23:14:50,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 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 23:14:50,742 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 151 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:50,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 678 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-20 23:14:50,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-11-20 23:14:50,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 650. [2021-11-20 23:14:50,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 593 states have (on average 1.2107925801011805) internal successors, (718), 607 states have internal predecessors, (718), 33 states have call successors, (33), 15 states have call predecessors, (33), 11 states have return successors, (44), 27 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-20 23:14:50,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 795 transitions. [2021-11-20 23:14:50,798 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 795 transitions. Word has length 37 [2021-11-20 23:14:50,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:50,799 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 795 transitions. [2021-11-20 23:14:50,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 23:14:50,799 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 795 transitions. [2021-11-20 23:14:50,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-20 23:14:50,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:50,804 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:50,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-20 23:14:51,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:51,021 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-20 23:14:51,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:51,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1507787838, now seen corresponding path program 1 times [2021-11-20 23:14:51,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:51,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289552623] [2021-11-20 23:14:51,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:51,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:51,036 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:14:51,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043155471] [2021-11-20 23:14:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:51,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:51,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:14:51,038 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:14:51,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 23:14:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:51,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:14:51,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:51,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 23:14:51,600 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:51,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289552623] [2021-11-20 23:14:51,600 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:14:51,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043155471] [2021-11-20 23:14:51,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043155471] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:14:51,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [23382348] [2021-11-20 23:14:51,605 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2021-11-20 23:14:51,605 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:14:51,606 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:14:51,606 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:14:51,606 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:14:51,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:51,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:14:51,697 INFO L354 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2021-11-20 23:14:51,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 70 [2021-11-20 23:14:51,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 70 [2021-11-20 23:14:51,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:51,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-20 23:14:51,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-20 23:14:51,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:51,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-11-20 23:14:51,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:51,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:51,927 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-20 23:14:51,927 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 23:14:51,959 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 15 treesize of output 1 [2021-11-20 23:14:51,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:51,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-20 23:14:52,000 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 15 treesize of output 1 [2021-11-20 23:14:52,217 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 23:14:52,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:52,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:52,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:52,303 INFO L354 Elim1Store]: treesize reduction 70, result has 28.6 percent of original size [2021-11-20 23:14:52,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 case distinctions, treesize of input 37 treesize of output 61 [2021-11-20 23:14:52,384 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 23:14:52,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:52,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:52,453 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-20 23:14:52,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 38 [2021-11-20 23:14:52,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:52,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:52,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:52,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:52,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:52,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 43 treesize of output 45 [2021-11-20 23:14:52,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2021-11-20 23:14:52,882 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 19 treesize of output 1 [2021-11-20 23:14:52,902 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 19 treesize of output 1 [2021-11-20 23:14:52,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:52,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:52,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:52,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:52,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:52,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 77 treesize of output 69 [2021-11-20 23:14:52,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:52,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 76 [2021-11-20 23:14:55,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,245 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 23:14:55,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,276 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 23:14:55,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 95 treesize of output 89 [2021-11-20 23:14:55,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 86 [2021-11-20 23:14:55,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 80 treesize of output 72 [2021-11-20 23:14:55,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 85 [2021-11-20 23:14:55,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,673 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 23:14:55,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,701 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 23:14:55,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,897 INFO L354 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2021-11-20 23:14:55,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 114 treesize of output 104 [2021-11-20 23:14:55,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,943 INFO L354 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2021-11-20 23:14:55,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 103 treesize of output 97 [2021-11-20 23:14:55,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 96 [2021-11-20 23:14:55,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:55,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 88 [2021-11-20 23:14:56,489 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 25 treesize of output 1 [2021-11-20 23:14:56,504 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 25 treesize of output 1 [2021-11-20 23:14:56,510 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 23:14:56,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:14:56,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-20 23:14:56,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-20 23:14:56,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-20 23:14:56,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,848 INFO L354 Elim1Store]: treesize reduction 45, result has 8.2 percent of original size [2021-11-20 23:14:56,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 23 [2021-11-20 23:14:56,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,930 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-11-20 23:14:56,930 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 3 case distinctions, treesize of input 76 treesize of output 70 [2021-11-20 23:14:56,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:56,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 43 [2021-11-20 23:14:56,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-20 23:14:57,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,069 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-11-20 23:14:57,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 28 [2021-11-20 23:14:57,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-20 23:14:57,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-20 23:14:57,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,612 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-11-20 23:14:57,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 32 [2021-11-20 23:14:57,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,698 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-20 23:14:57,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 23 [2021-11-20 23:14:57,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,731 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 23:14:57,731 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 1 case distinctions, treesize of input 76 treesize of output 58 [2021-11-20 23:14:57,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2021-11-20 23:14:57,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:14:57,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2021-11-20 23:14:57,971 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 234 treesize of output 230 [2021-11-20 23:14:57,991 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 245 treesize of output 241 [2021-11-20 23:14:58,248 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 19 treesize of output 1 [2021-11-20 23:14:59,889 INFO L197 IcfgInterpreter]: Interpreting procedure alt_bzero with input of size 78 for LOIs [2021-11-20 23:15:01,041 INFO L197 IcfgInterpreter]: Interpreting procedure alt_malloc with input of size 110 for LOIs [2021-11-20 23:15:02,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:02,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:02,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:02,678 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:15:02,679 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 3 case distinctions, treesize of input 197 treesize of output 181 [2021-11-20 23:15:02,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:02,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:02,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:02,693 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:15:02,694 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 3 case distinctions, treesize of input 172 treesize of output 156 [2021-11-20 23:15:02,728 INFO L354 Elim1Store]: treesize reduction 84, result has 11.6 percent of original size [2021-11-20 23:15:02,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 147 treesize of output 139 [2021-11-20 23:15:03,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:03,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:03,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:03,436 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:15:03,437 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 3 case distinctions, treesize of input 197 treesize of output 181 [2021-11-20 23:15:03,518 INFO L354 Elim1Store]: treesize reduction 84, result has 11.6 percent of original size [2021-11-20 23:15:03,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 172 treesize of output 164 [2021-11-20 23:15:03,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:03,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:03,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:03,541 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:15:03,542 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 3 case distinctions, treesize of input 164 treesize of output 148 [2021-11-20 23:15:04,884 INFO L354 Elim1Store]: treesize reduction 84, result has 11.6 percent of original size [2021-11-20 23:15:04,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 197 treesize of output 189 [2021-11-20 23:15:04,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:04,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:04,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:04,907 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:15:04,908 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 3 case distinctions, treesize of input 189 treesize of output 173 [2021-11-20 23:15:04,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:04,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:04,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:04,929 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:15:04,930 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 3 case distinctions, treesize of input 164 treesize of output 148 [2021-11-20 23:15:05,159 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 102 for LOIs [2021-11-20 23:15:05,424 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:15:10,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [23382348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:10,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:15:10,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 5] total 31 [2021-11-20 23:15:10,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125491274] [2021-11-20 23:15:10,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:10,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-20 23:15:10,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:10,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-20 23:15:10,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2021-11-20 23:15:10,026 INFO L87 Difference]: Start difference. First operand 650 states and 795 transitions. Second operand has 23 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 23:15:14,951 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:15:17,992 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:15:21,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:15:23,805 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:15:24,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:24,703 INFO L93 Difference]: Finished difference Result 1272 states and 1563 transitions. [2021-11-20 23:15:24,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 23:15:24,705 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 46 [2021-11-20 23:15:24,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:24,710 INFO L225 Difference]: With dead ends: 1272 [2021-11-20 23:15:24,710 INFO L226 Difference]: Without dead ends: 652 [2021-11-20 23:15:24,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 104 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2021-11-20 23:15:24,714 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 8 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 518 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:24,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 1623 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 697 Invalid, 2 Unknown, 518 Unchecked, 14.6s Time] [2021-11-20 23:15:24,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-11-20 23:15:24,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2021-11-20 23:15:24,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 595 states have (on average 1.2100840336134453) internal successors, (720), 609 states have internal predecessors, (720), 33 states have call successors, (33), 15 states have call predecessors, (33), 11 states have return successors, (44), 27 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-20 23:15:24,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 797 transitions. [2021-11-20 23:15:24,756 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 797 transitions. Word has length 46 [2021-11-20 23:15:24,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:24,756 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 797 transitions. [2021-11-20 23:15:24,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 23:15:24,757 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 797 transitions. [2021-11-20 23:15:24,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-20 23:15:24,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:24,758 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:24,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 23:15:24,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 23:15:24,985 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-20 23:15:24,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:24,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2074882063, now seen corresponding path program 1 times [2021-11-20 23:15:24,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:24,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228079088] [2021-11-20 23:15:24,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:24,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:25,010 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:15:25,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [629752176] [2021-11-20 23:15:25,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:25,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:15:25,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:15:25,016 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:15:25,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897826ea-97c6-45ae-abaf-1c6c8f77c8af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 23:15:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:25,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:15:25,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:25,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:15:25,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:15:25,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-20 23:15:25,634 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:25,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228079088] [2021-11-20 23:15:25,634 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:15:25,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629752176] [2021-11-20 23:15:25,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629752176] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:15:25,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [849402835] [2021-11-20 23:15:25,638 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2021-11-20 23:15:25,638 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:15:25,639 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:15:25,639 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:15:25,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:15:25,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:25,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:25,712 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-20 23:15:25,712 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 23:15:25,749 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 15 treesize of output 1 [2021-11-20 23:15:25,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:25,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:25,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2021-11-20 23:15:25,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-20 23:15:25,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:25,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-20 23:15:25,854 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 15 treesize of output 1 [2021-11-20 23:15:26,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:26,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:26,106 INFO L354 Elim1Store]: treesize reduction 50, result has 32.4 percent of original size [2021-11-20 23:15:26,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 27 treesize of output 46 [2021-11-20 23:15:26,170 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 23:15:26,201 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 23:15:26,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:26,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:26,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:26,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:26,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:26,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:26,309 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-20 23:15:26,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2021-11-20 23:15:26,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:26,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:26,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:26,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:26,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:26,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 45 [2021-11-20 23:15:26,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2021-11-20 23:15:26,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:26,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:26,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:26,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:26,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:26,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 77 treesize of output 69 [2021-11-20 23:15:26,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:26,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 76 [2021-11-20 23:15:26,848 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 19 treesize of output 1 [2021-11-20 23:15:26,900 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 19 treesize of output 1 [2021-11-20 23:15:29,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,225 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 23:15:29,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,286 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 23:15:29,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 95 treesize of output 89 [2021-11-20 23:15:29,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 88 treesize of output 82 [2021-11-20 23:15:29,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 77 [2021-11-20 23:15:29,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 85 [2021-11-20 23:15:29,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,781 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 23:15:29,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,892 INFO L354 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2021-11-20 23:15:29,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 114 treesize of output 104 [2021-11-20 23:15:29,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,952 INFO L354 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2021-11-20 23:15:29,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 103 treesize of output 97 [2021-11-20 23:15:29,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:29,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 96 [2021-11-20 23:15:30,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 88 [2021-11-20 23:15:30,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,256 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 23:15:30,657 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 25 treesize of output 1 [2021-11-20 23:15:30,666 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 25 treesize of output 1 [2021-11-20 23:15:30,671 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 23:15:30,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:15:30,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-20 23:15:30,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,886 INFO L354 Elim1Store]: treesize reduction 45, result has 8.2 percent of original size [2021-11-20 23:15:30,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 23 [2021-11-20 23:15:30,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-20 23:15:30,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-20 23:15:30,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:30,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,014 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-11-20 23:15:31,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 32 [2021-11-20 23:15:31,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,100 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 23:15:31,100 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 1 case distinctions, treesize of input 76 treesize of output 58 [2021-11-20 23:15:31,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 30 [2021-11-20 23:15:31,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-20 23:15:31,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-20 23:15:31,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,645 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-11-20 23:15:31,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 32 [2021-11-20 23:15:31,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-20 23:15:31,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,795 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 23:15:31,795 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 1 case distinctions, treesize of input 76 treesize of output 58 [2021-11-20 23:15:31,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 30 [2021-11-20 23:15:31,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-20 23:15:31,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:31,870 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 23:15:31,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 23 [2021-11-20 23:15:31,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-20 23:15:32,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:15:32,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-20 23:15:32,771 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 23:15:32,794 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 23:15:32,807 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 23:15:32,859 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-20 23:15:32,859 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 137 treesize of output 136 [2021-11-20 23:15:32,889 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-20 23:15:32,889 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 133 treesize of output 132 [2021-11-20 23:15:32,911 INFO L354 Elim1Store]: treesize reduction 34, result has 22.7 percent of original size [2021-11-20 23:15:32,912 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 129 treesize of output 128 [2021-11-20 23:15:33,073 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 23:15:33,087 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 23:15:33,105 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 23:15:33,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-20 23:15:33,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2021-11-20 23:15:33,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-20 23:15:33,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2021-11-20 23:15:35,967 INFO L354 Elim1Store]: treesize reduction 348, result has 15.7 percent of original size [2021-11-20 23:15:35,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 1526 treesize of output 1147 [2021-11-20 23:15:35,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:38,157 INFO L354 Elim1Store]: treesize reduction 262, result has 32.6 percent of original size [2021-11-20 23:15:38,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 1583 treesize of output 1349 [2021-11-20 23:15:40,278 INFO L354 Elim1Store]: treesize reduction 1190, result has 35.1 percent of original size [2021-11-20 23:15:40,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 1383 treesize of output 1461 [2021-11-20 23:15:41,261 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:15:41,391 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:15:41,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:41,635 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-11-20 23:15:41,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 20 [2021-11-20 23:15:41,816 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:15:42,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:42,129 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:15:42,130 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 53 treesize of output 63 [2021-11-20 23:15:42,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:42,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2021-11-20 23:15:43,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:43,267 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-11-20 23:15:43,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 26 [2021-11-20 23:15:43,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:15:43,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:43,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-20 23:15:44,013 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:15:48,737 INFO L354 Elim1Store]: treesize reduction 759, result has 27.4 percent of original size [2021-11-20 23:15:48,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 2629 treesize of output 2155 [2021-11-20 23:15:48,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:48,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:50,390 INFO L354 Elim1Store]: treesize reduction 206, result has 65.7 percent of original size [2021-11-20 23:15:50,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 2147 treesize of output 2401 [2021-11-20 23:15:50,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:15:51,991 INFO L354 Elim1Store]: treesize reduction 134, result has 69.6 percent of original size [2021-11-20 23:15:51,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 2401 treesize of output 2615 [2021-11-20 23:16:33,827 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:16:34,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:16:34,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:34,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:34,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:34,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 26 [2021-11-20 23:16:36,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:36,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:36,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:37,129 INFO L354 Elim1Store]: treesize reduction 54, result has 57.5 percent of original size [2021-11-20 23:16:37,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 85 [2021-11-20 23:16:37,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:37,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:37,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:37,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:37,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:37,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:16:37,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 13 [2021-11-20 23:16:38,217 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:16:38,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:16:38,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:38,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:16:38,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:38,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:38,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:38,734 INFO L244 Elim1Store]: Index analysis took 103 ms [2021-11-20 23:16:38,782 INFO L354 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2021-11-20 23:16:38,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 1 [2021-11-20 23:16:40,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:40,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:16:40,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:40,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:40,154 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 56 treesize of output 10 [2021-11-20 23:16:40,498 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:16:42,505 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:16:42,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:42,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:42,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:42,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 13 [2021-11-20 23:16:43,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:43,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:43,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:43,659 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 56 treesize of output 10 [2021-11-20 23:16:44,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:44,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:16:44,552 INFO L244 Elim1Store]: Index analysis took 135 ms [2021-11-20 23:16:45,428 INFO L354 Elim1Store]: treesize reduction 101, result has 33.1 percent of original size [2021-11-20 23:16:45,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 87 treesize of output 78 [2021-11-20 23:17:01,062 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:17:01,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:17:01,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:01,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:01,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:01,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 26 [2021-11-20 23:17:03,918 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:17:05,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:17:05,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:05,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:17:05,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:05,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:05,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 26 [2021-11-20 23:17:05,997 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:17:06,693 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:17:07,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:17:07,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:07,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:07,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:07,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 10 [2021-11-20 23:17:19,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:19,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:19,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:19,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:19,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:19,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:17:19,989 INFO L244 Elim1Store]: Index analysis took 121 ms [2021-11-20 23:17:19,994 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 65 treesize of output 13 [2021-11-20 23:17:31,972 WARN L234 Elim1Store]: Array PQE input equivalent to false