./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.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_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/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_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/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_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/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 8bb47039b70660cfe333b6887d0f99d94255697a030b075b004d2298d7cf4777 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:20:46,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:20:46,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:20:46,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:20:46,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:20:46,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:20:46,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:20:46,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:20:46,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:20:46,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:20:46,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:20:46,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:20:46,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:20:46,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:20:46,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:20:46,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:20:46,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:20:46,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:20:46,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:20:46,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:20:46,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:20:46,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:20:46,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:20:46,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:20:46,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:20:46,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:20:46,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:20:46,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:20:46,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:20:46,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:20:46,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:20:46,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:20:46,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:20:46,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:20:46,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:20:46,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:20:46,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:20:46,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:20:46,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:20:46,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:20:46,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:20:46,465 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-21 01:20:46,512 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:20:46,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:20:46,513 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:20:46,513 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:20:46,515 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:20:46,515 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:20:46,515 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:20:46,515 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:20:46,516 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:20:46,516 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:20:46,517 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:20:46,517 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:20:46,518 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:20:46,518 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:20:46,518 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:20:46,518 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:20:46,519 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:20:46,519 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:20:46,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:20:46,520 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:20:46,520 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:20:46,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:20:46,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:20:46,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:20:46,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:20:46,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:20:46,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:20:46,523 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-21 01:20:46,524 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:20:46,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:20:46,524 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:20:46,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:20:46,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:20:46,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:20:46,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:20:46,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:20:46,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:20:46,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:20:46,526 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:20:46,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:20:46,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:20:46,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:20:46,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:20:46,527 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_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bb47039b70660cfe333b6887d0f99d94255697a030b075b004d2298d7cf4777 [2021-11-21 01:20:46,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:20:46,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:20:46,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:20:46,842 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:20:46,843 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:20:46,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i [2021-11-21 01:20:46,904 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/data/67753b134/355451d82ae74057899c0b1317c8843c/FLAGc65a8914b [2021-11-21 01:20:47,559 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:20:47,563 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i [2021-11-21 01:20:47,596 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/data/67753b134/355451d82ae74057899c0b1317c8843c/FLAGc65a8914b [2021-11-21 01:20:47,722 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/data/67753b134/355451d82ae74057899c0b1317c8843c [2021-11-21 01:20:47,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:20:47,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:20:47,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:20:47,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:20:47,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:20:47,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:20:47" (1/1) ... [2021-11-21 01:20:47,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@652b0a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:20:47, skipping insertion in model container [2021-11-21 01:20:47,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:20:47" (1/1) ... [2021-11-21 01:20:47,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:20:47,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:20:48,464 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_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i[33021,33034] [2021-11-21 01:20:48,758 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_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i[84583,84596] [2021-11-21 01:20:48,762 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:20:48,778 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:20:48,822 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_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i[33021,33034] [2021-11-21 01:20:49,055 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_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i[84583,84596] [2021-11-21 01:20:49,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:20:49,122 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:20:49,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:20:49 WrapperNode [2021-11-21 01:20:49,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:20:49,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:20:49,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:20:49,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:20:49,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:20:49" (1/1) ... [2021-11-21 01:20:49,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:20:49" (1/1) ... [2021-11-21 01:20:49,344 INFO L137 Inliner]: procedures = 177, calls = 730, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2872 [2021-11-21 01:20:49,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:20:49,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:20:49,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:20:49,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:20:49,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:20:49" (1/1) ... [2021-11-21 01:20:49,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:20:49" (1/1) ... [2021-11-21 01:20:49,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:20:49" (1/1) ... [2021-11-21 01:20:49,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:20:49" (1/1) ... [2021-11-21 01:20:49,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:20:49" (1/1) ... [2021-11-21 01:20:49,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:20:49" (1/1) ... [2021-11-21 01:20:49,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:20:49" (1/1) ... [2021-11-21 01:20:49,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:20:49,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:20:49,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:20:49,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:20:49,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:20:49" (1/1) ... [2021-11-21 01:20:49,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:20:49,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:20:49,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:20:49,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:20:49,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:20:49,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:20:49,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:20:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:20:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:20:49,679 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:20:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:20:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:20:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:20:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:20:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 01:20:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:20:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:20:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:20:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:20:49,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:20:49,973 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:20:49,976 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:20:52,610 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:20:53,137 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:20:53,137 INFO L301 CfgBuilder]: Removed 54 assume(true) statements. [2021-11-21 01:20:53,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:20:53 BoogieIcfgContainer [2021-11-21 01:20:53,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:20:53,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:20:53,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:20:53,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:20:53,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:20:47" (1/3) ... [2021-11-21 01:20:53,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393394ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:20:53, skipping insertion in model container [2021-11-21 01:20:53,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:20:49" (2/3) ... [2021-11-21 01:20:53,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393394ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:20:53, skipping insertion in model container [2021-11-21 01:20:53,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:20:53" (3/3) ... [2021-11-21 01:20:53,157 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test9-1.i [2021-11-21 01:20:53,163 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:20:53,164 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-21 01:20:53,247 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:20:53,258 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:20:53,258 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-21 01:20:53,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 1109 states, 595 states have (on average 1.969747899159664) internal successors, (1172), 1103 states have internal predecessors, (1172), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-21 01:20:53,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 01:20:53,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:20:53,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 01:20:53,336 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:20:53,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:20:53,342 INFO L85 PathProgramCache]: Analyzing trace with hash 141041905, now seen corresponding path program 1 times [2021-11-21 01:20:53,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:20:53,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876034937] [2021-11-21 01:20:53,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:20:53,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:20:53,485 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:20:53,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544051929] [2021-11-21 01:20:53,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:20:53,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:20:53,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:20:53,488 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:20:53,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:20:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:20:53,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:20:53,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:20:53,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:20:53,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:20:53,960 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 25 treesize of output 17 [2021-11-21 01:20:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:20:53,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:20:53,976 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:20:53,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876034937] [2021-11-21 01:20:53,977 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:20:53,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544051929] [2021-11-21 01:20:53,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544051929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:20:53,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:20:53,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:20:53,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800905760] [2021-11-21 01:20:53,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:20:53,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:20:53,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:20:54,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:20:54,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:20:54,047 INFO L87 Difference]: Start difference. First operand has 1109 states, 595 states have (on average 1.969747899159664) internal successors, (1172), 1103 states have internal predecessors, (1172), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) 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) [2021-11-21 01:20:57,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:20:57,023 INFO L93 Difference]: Finished difference Result 3278 states and 6462 transitions. [2021-11-21 01:20:57,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:20:57,030 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 [2021-11-21 01:20:57,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:20:57,074 INFO L225 Difference]: With dead ends: 3278 [2021-11-21 01:20:57,075 INFO L226 Difference]: Without dead ends: 2167 [2021-11-21 01:20:57,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:20:57,087 INFO L933 BasicCegarLoop]: 2595 mSDtfsCounter, 1065 mSDsluCounter, 4190 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 6771 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:20:57,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1565 Valid, 6771 Invalid, 604 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-21 01:20:57,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2021-11-21 01:20:58,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 1111. [2021-11-21 01:20:58,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 598 states have (on average 1.874581939799331) internal successors, (1121), 1105 states have internal predecessors, (1121), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-21 01:20:58,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2127 transitions. [2021-11-21 01:20:58,136 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2127 transitions. Word has length 4 [2021-11-21 01:20:58,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:20:58,137 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2127 transitions. [2021-11-21 01:20:58,137 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) [2021-11-21 01:20:58,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2127 transitions. [2021-11-21 01:20:58,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 01:20:58,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:20:58,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:20:58,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:20:58,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-21 01:20:58,355 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:20:58,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:20:58,355 INFO L85 PathProgramCache]: Analyzing trace with hash -383646736, now seen corresponding path program 1 times [2021-11-21 01:20:58,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:20:58,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075005091] [2021-11-21 01:20:58,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:20:58,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:20:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:20:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:20:58,438 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:20:58,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075005091] [2021-11-21 01:20:58,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075005091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:20:58,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:20:58,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:20:58,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908143995] [2021-11-21 01:20:58,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:20:58,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:20:58,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:20:58,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:20:58,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:20:58,443 INFO L87 Difference]: Start difference. First operand 1111 states and 2127 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:21:02,021 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:21:03,755 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:21:03,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:21:03,756 INFO L93 Difference]: Finished difference Result 3200 states and 6229 transitions. [2021-11-21 01:21:03,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:21:03,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-21 01:21:03,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:21:03,814 INFO L225 Difference]: With dead ends: 3200 [2021-11-21 01:21:03,815 INFO L226 Difference]: Without dead ends: 2154 [2021-11-21 01:21:03,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:21:03,824 INFO L933 BasicCegarLoop]: 2598 mSDtfsCounter, 1051 mSDsluCounter, 4195 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 6778 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:21:03,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1551 Valid, 6778 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-21 01:21:03,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2021-11-21 01:21:04,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 1111. [2021-11-21 01:21:04,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 598 states have (on average 1.8729096989966556) internal successors, (1120), 1105 states have internal predecessors, (1120), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-21 01:21:04,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2126 transitions. [2021-11-21 01:21:04,228 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2126 transitions. Word has length 20 [2021-11-21 01:21:04,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:21:04,229 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2126 transitions. [2021-11-21 01:21:04,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:21:04,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2126 transitions. [2021-11-21 01:21:04,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-21 01:21:04,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:21:04,231 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] [2021-11-21 01:21:04,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:21:04,232 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:21:04,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:21:04,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1745491547, now seen corresponding path program 1 times [2021-11-21 01:21:04,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:21:04,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13143173] [2021-11-21 01:21:04,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:21:04,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:21:04,257 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:21:04,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696527589] [2021-11-21 01:21:04,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:21:04,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:21:04,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:21:04,260 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:21:04,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:21:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:21:04,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:21:04,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:21:04,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:21:04,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:21:04,635 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:21:04,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13143173] [2021-11-21 01:21:04,635 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:21:04,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696527589] [2021-11-21 01:21:04,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696527589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:21:04,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:21:04,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:21:04,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555346564] [2021-11-21 01:21:04,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:21:04,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:21:04,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:21:04,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:21:04,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:21:04,639 INFO L87 Difference]: Start difference. First operand 1111 states and 2126 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) [2021-11-21 01:21:05,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:21:05,381 INFO L93 Difference]: Finished difference Result 3258 states and 6292 transitions. [2021-11-21 01:21:05,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:21:05,386 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 [2021-11-21 01:21:05,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:21:05,406 INFO L225 Difference]: With dead ends: 3258 [2021-11-21 01:21:05,406 INFO L226 Difference]: Without dead ends: 2152 [2021-11-21 01:21:05,411 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 [2021-11-21 01:21:05,412 INFO L933 BasicCegarLoop]: 2621 mSDtfsCounter, 1039 mSDsluCounter, 2102 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 4711 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:21:05,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1541 Valid, 4711 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:21:05,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2021-11-21 01:21:05,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 2148. [2021-11-21 01:21:05,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2148 states, 1135 states have (on average 1.905726872246696) internal successors, (2163), 2142 states have internal predecessors, (2163), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-21 01:21:05,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2148 states to 2148 states and 4169 transitions. [2021-11-21 01:21:05,749 INFO L78 Accepts]: Start accepts. Automaton has 2148 states and 4169 transitions. Word has length 28 [2021-11-21 01:21:05,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:21:05,749 INFO L470 AbstractCegarLoop]: Abstraction has 2148 states and 4169 transitions. [2021-11-21 01:21:05,750 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) [2021-11-21 01:21:05,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2148 states and 4169 transitions. [2021-11-21 01:21:05,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-21 01:21:05,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:21:05,752 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:21:05,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:21:05,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:21:05,966 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:21:05,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:21:05,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1852091971, now seen corresponding path program 1 times [2021-11-21 01:21:05,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:21:05,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489917849] [2021-11-21 01:21:05,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:21:05,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:21:06,005 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:21:06,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098434793] [2021-11-21 01:21:06,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:21:06,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:21:06,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:21:06,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:21:06,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:21:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:21:06,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:21:06,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:21:06,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:21:06,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:21:06,975 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:21:06,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489917849] [2021-11-21 01:21:06,976 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:21:06,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098434793] [2021-11-21 01:21:06,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098434793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:21:06,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:21:06,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:21:06,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91332479] [2021-11-21 01:21:06,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:21:06,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:21:06,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:21:06,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:21:06,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:21:06,979 INFO L87 Difference]: Start difference. First operand 2148 states and 4169 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:21:08,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:21:08,023 INFO L93 Difference]: Finished difference Result 4280 states and 8324 transitions. [2021-11-21 01:21:08,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:21:08,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 41 [2021-11-21 01:21:08,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:21:08,055 INFO L225 Difference]: With dead ends: 4280 [2021-11-21 01:21:08,055 INFO L226 Difference]: Without dead ends: 2150 [2021-11-21 01:21:08,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:21:08,065 INFO L933 BasicCegarLoop]: 2106 mSDtfsCounter, 1 mSDsluCounter, 4234 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6314 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:21:08,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 6314 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-21 01:21:08,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2021-11-21 01:21:08,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 2150. [2021-11-21 01:21:08,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 1136 states have (on average 1.9058098591549295) internal successors, (2165), 2144 states have internal predecessors, (2165), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 3 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-21 01:21:08,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 4172 transitions. [2021-11-21 01:21:08,545 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 4172 transitions. Word has length 41 [2021-11-21 01:21:08,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:21:08,546 INFO L470 AbstractCegarLoop]: Abstraction has 2150 states and 4172 transitions. [2021-11-21 01:21:08,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:21:08,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 4172 transitions. [2021-11-21 01:21:08,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-21 01:21:08,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:21:08,548 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:21:08,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:21:08,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:21:08,774 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-21 01:21:08,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:21:08,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1847396167, now seen corresponding path program 1 times [2021-11-21 01:21:08,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:21:08,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048572092] [2021-11-21 01:21:08,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:21:08,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:21:08,809 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:21:08,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068526419] [2021-11-21 01:21:08,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:21:08,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:21:08,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:21:08,814 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:21:08,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41de4f7a-1d66-4dc0-9c35-7cdd7016132e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:21:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:21:09,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:21:09,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:21:09,995 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:21:09,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:21:10,200 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:21:10,200 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:21:10,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048572092] [2021-11-21 01:21:10,201 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:21:10,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068526419] [2021-11-21 01:21:10,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068526419] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:21:10,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [502920450] [2021-11-21 01:21:10,225 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2021-11-21 01:21:10,225 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:21:10,231 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:21:10,237 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:21:10,238 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:21:10,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:21:10,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:21:10,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:10,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:10,357 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:21:10,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:21:10,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:10,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:21:10,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:10,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 01:21:10,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:10,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:10,645 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-21 01:21:10,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 38 [2021-11-21 01:21:10,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:10,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:10,701 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-21 01:21:10,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:21:10,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:10,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:10,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:10,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:10,788 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-21 01:21:10,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-21 01:21:10,839 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 15 treesize of output 1 [2021-11-21 01:21:10,858 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 15 treesize of output 1 [2021-11-21 01:21:11,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:11,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:11,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:11,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:11,089 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 0 case distinctions, treesize of input 71 treesize of output 59 [2021-11-21 01:21:11,130 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 [2021-11-21 01:21:11,181 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 [2021-11-21 01:21:12,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-21 01:21:12,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-21 01:21:12,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 75 [2021-11-21 01:21:12,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 74 [2021-11-21 01:21:12,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:12,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-11-21 01:21:13,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-11-21 01:21:13,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 19 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 86 [2021-11-21 01:21:13,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 115 [2021-11-21 01:21:13,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,471 INFO L354 Elim1Store]: treesize reduction 202, result has 21.7 percent of original size [2021-11-21 01:21:13,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 127 treesize of output 163 [2021-11-21 01:21:13,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,545 INFO L354 Elim1Store]: treesize reduction 128, result has 14.1 percent of original size [2021-11-21 01:21:13,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 case distinctions, treesize of input 145 treesize of output 156 [2021-11-21 01:21:13,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 77 [2021-11-21 01:21:13,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:13,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 01:21:14,384 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 11 treesize of output 7 [2021-11-21 01:21:14,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:21:14,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:21:14,468 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-21 01:21:14,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 88 [2021-11-21 01:21:14,497 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-21 01:21:14,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 91 [2021-11-21 01:21:14,525 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-21 01:21:14,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2021-11-21 01:21:14,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 01:21:14,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-21 01:21:14,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-21 01:21:14,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-21 01:21:14,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 26 [2021-11-21 01:21:14,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:14,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-11-21 01:21:15,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 26 [2021-11-21 01:21:15,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-21 01:21:15,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:15,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-11-21 01:21:21,900 WARN L227 SmtUtils]: Spent 6.45s on a formula simplification. DAG size of input: 66 DAG size of output: 32 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:21:21,901 INFO L354 Elim1Store]: treesize reduction 348, result has 15.7 percent of original size [2021-11-21 01:21:21,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 2847 treesize of output 2324 [2021-11-21 01:21:21,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:32,528 WARN L227 SmtUtils]: Spent 10.56s on a formula simplification. DAG size of input: 90 DAG size of output: 46 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:21:32,529 INFO L354 Elim1Store]: treesize reduction 262, result has 32.6 percent of original size [2021-11-21 01:21:32,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 2948 treesize of output 2666 [2021-11-21 01:21:45,752 WARN L227 SmtUtils]: Spent 13.09s on a formula simplification. DAG size of input: 252 DAG size of output: 143 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:21:45,754 INFO L354 Elim1Store]: treesize reduction 2662, result has 30.3 percent of original size [2021-11-21 01:21:45,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 2852 treesize of output 2682 [2021-11-21 01:21:46,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:46,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:47,378 INFO L354 Elim1Store]: treesize reduction 126, result has 17.1 percent of original size [2021-11-21 01:21:47,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 25950 treesize of output 25964 [2021-11-21 01:21:47,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:47,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:47,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:48,501 INFO L354 Elim1Store]: treesize reduction 204, result has 13.2 percent of original size [2021-11-21 01:21:48,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 25949 treesize of output 25964 [2021-11-21 01:21:50,076 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:21:50,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:50,473 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-11-21 01:21:50,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 30 [2021-11-21 01:21:50,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:50,964 INFO L354 Elim1Store]: treesize reduction 11, result has 56.0 percent of original size [2021-11-21 01:21:50,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 44