./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/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_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/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_f359ba05-33d7-4a21-a261-fca099fd0918/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 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:58:44,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:58:44,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:58:44,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:58:44,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:58:44,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:58:44,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:58:44,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:58:44,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:58:44,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:58:44,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:58:44,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:58:44,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:58:44,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:58:44,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:58:44,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:58:44,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:58:44,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:58:44,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:58:44,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:58:44,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:58:44,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:58:44,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:58:44,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:58:44,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:58:44,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:58:44,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:58:44,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:58:44,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:58:44,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:58:44,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:58:44,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:58:44,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:58:44,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:58:44,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:58:44,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:58:44,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:58:44,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:58:44,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:58:44,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:58:44,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:58:44,421 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-21 01:58:44,467 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:58:44,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:58:44,468 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:58:44,468 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:58:44,475 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:58:44,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:58:44,475 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:58:44,476 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:58:44,476 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:58:44,476 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:58:44,477 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:58:44,478 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:58:44,478 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:58:44,478 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:58:44,478 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:58:44,479 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:58:44,479 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:58:44,479 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:58:44,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:58:44,480 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:58:44,481 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:58:44,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:58:44,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:58:44,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:58:44,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:58:44,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:58:44,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:58:44,482 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-21 01:58:44,482 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:58:44,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:58:44,483 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:58:44,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:58:44,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:58:44,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:58:44,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:58:44,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:58:44,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:58:44,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:58:44,485 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:58:44,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:58:44,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:58:44,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:58:44,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:58:44,488 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_f359ba05-33d7-4a21-a261-fca099fd0918/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 [2021-11-21 01:58:44,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:58:44,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:58:44,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:58:44,790 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:58:44,791 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:58:44,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2021-11-21 01:58:44,858 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/data/9be26780a/b57d98f318b249b0830ed853bd2f2a53/FLAG168ae7771 [2021-11-21 01:58:45,480 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:58:45,481 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2021-11-21 01:58:45,513 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/data/9be26780a/b57d98f318b249b0830ed853bd2f2a53/FLAG168ae7771 [2021-11-21 01:58:45,681 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/data/9be26780a/b57d98f318b249b0830ed853bd2f2a53 [2021-11-21 01:58:45,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:58:45,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:58:45,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:58:45,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:58:45,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:58:45,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:58:45" (1/1) ... [2021-11-21 01:58:45,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f1ed801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:45, skipping insertion in model container [2021-11-21 01:58:45,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:58:45" (1/1) ... [2021-11-21 01:58:45,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:58:45,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:58:46,410 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_f359ba05-33d7-4a21-a261-fca099fd0918/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44118,44131] [2021-11-21 01:58:46,419 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_f359ba05-33d7-4a21-a261-fca099fd0918/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44660,44673] [2021-11-21 01:58:46,509 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_f359ba05-33d7-4a21-a261-fca099fd0918/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56247,56260] [2021-11-21 01:58:46,510 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_f359ba05-33d7-4a21-a261-fca099fd0918/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56368,56381] [2021-11-21 01:58:46,518 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:58:46,534 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:58:46,592 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_f359ba05-33d7-4a21-a261-fca099fd0918/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44118,44131] [2021-11-21 01:58:46,594 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_f359ba05-33d7-4a21-a261-fca099fd0918/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44660,44673] [2021-11-21 01:58:46,688 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_f359ba05-33d7-4a21-a261-fca099fd0918/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56247,56260] [2021-11-21 01:58:46,694 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_f359ba05-33d7-4a21-a261-fca099fd0918/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56368,56381] [2021-11-21 01:58:46,704 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:58:46,777 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:58:46,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:46 WrapperNode [2021-11-21 01:58:46,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:58:46,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:58:46,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:58:46,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:58:46,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:46" (1/1) ... [2021-11-21 01:58:46,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:46" (1/1) ... [2021-11-21 01:58:46,951 INFO L137 Inliner]: procedures = 282, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1050 [2021-11-21 01:58:46,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:58:46,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:58:46,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:58:46,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:58:46,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:46" (1/1) ... [2021-11-21 01:58:46,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:46" (1/1) ... [2021-11-21 01:58:46,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:46" (1/1) ... [2021-11-21 01:58:46,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:46" (1/1) ... [2021-11-21 01:58:47,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:46" (1/1) ... [2021-11-21 01:58:47,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:46" (1/1) ... [2021-11-21 01:58:47,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:46" (1/1) ... [2021-11-21 01:58:47,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:58:47,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:58:47,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:58:47,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:58:47,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:46" (1/1) ... [2021-11-21 01:58:47,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:58:47,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:58:47,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:58:47,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:58:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:58:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 01:58:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:58:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:58:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-11-21 01:58:47,184 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-11-21 01:58:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:58:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:58:47,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:58:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:58:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:58:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:58:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-11-21 01:58:47,185 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-11-21 01:58:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:58:47,186 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-11-21 01:58:47,186 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-11-21 01:58:47,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:58:47,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:58:47,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:58:47,491 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:58:47,492 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:58:48,380 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:58:48,752 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:58:48,753 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-21 01:58:48,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:58:48 BoogieIcfgContainer [2021-11-21 01:58:48,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:58:48,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:58:48,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:58:48,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:58:48,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:58:45" (1/3) ... [2021-11-21 01:58:48,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fcb224a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:58:48, skipping insertion in model container [2021-11-21 01:58:48,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:46" (2/3) ... [2021-11-21 01:58:48,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fcb224a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:58:48, skipping insertion in model container [2021-11-21 01:58:48,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:58:48" (3/3) ... [2021-11-21 01:58:48,768 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test6-1.i [2021-11-21 01:58:48,774 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:58:48,774 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-21 01:58:48,836 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:58:48,844 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 01:58:48,844 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-21 01:58:48,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 158 states, 126 states have (on average 1.746031746031746) internal successors, (220), 140 states have internal predecessors, (220), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-21 01:58:48,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 01:58:48,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:58:48,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 01:58:48,875 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-21 01:58:48,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:58:48,881 INFO L85 PathProgramCache]: Analyzing trace with hash 27392344, now seen corresponding path program 1 times [2021-11-21 01:58:48,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:58:48,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422513731] [2021-11-21 01:58:48,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:58:48,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:58:49,014 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:58:49,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984396481] [2021-11-21 01:58:49,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:58:49,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:58:49,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:58:49,035 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:58:49,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:58:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:58:49,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 01:58:49,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:58:49,362 INFO L354 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2021-11-21 01:58:49,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 50 [2021-11-21 01:58:49,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:58:49,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 01:58:49,536 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:58:49,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-21 01:59:01,673 WARN L227 SmtUtils]: Spent 12.08s on a formula simplification. DAG size of input: 24 DAG size of output: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:59:01,758 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:59:01,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 46 [2021-11-21 01:59:01,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-21 01:59:01,800 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 01:59:01,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:59:01,801 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:01,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422513731] [2021-11-21 01:59:01,802 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:59:01,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984396481] [2021-11-21 01:59:01,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984396481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:01,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:01,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:59:01,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698209979] [2021-11-21 01:59:01,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:01,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:59:01,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:01,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:59:01,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:59:01,838 INFO L87 Difference]: Start difference. First operand has 158 states, 126 states have (on average 1.746031746031746) internal successors, (220), 140 states have internal predecessors, (220), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:59:03,812 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 01:59:04,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:04,310 INFO L93 Difference]: Finished difference Result 318 states and 501 transitions. [2021-11-21 01:59:04,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:59:04,316 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 01:59:04,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:04,324 INFO L225 Difference]: With dead ends: 318 [2021-11-21 01:59:04,324 INFO L226 Difference]: Without dead ends: 154 [2021-11-21 01:59:04,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:59:04,331 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 2 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:04,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 434 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 55 Unchecked, 2.4s Time] [2021-11-21 01:59:04,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-21 01:59:04,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2021-11-21 01:59:04,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 125 states have (on average 1.256) internal successors, (157), 139 states have internal predecessors, (157), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-21 01:59:04,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 177 transitions. [2021-11-21 01:59:04,406 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 177 transitions. Word has length 4 [2021-11-21 01:59:04,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:04,407 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 177 transitions. [2021-11-21 01:59:04,407 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 01:59:04,407 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 177 transitions. [2021-11-21 01:59:04,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-21 01:59:04,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:04,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:04,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:59:04,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-21 01:59:04,623 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-21 01:59:04,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:04,624 INFO L85 PathProgramCache]: Analyzing trace with hash -646465482, now seen corresponding path program 1 times [2021-11-21 01:59:04,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:04,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702458178] [2021-11-21 01:59:04,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:04,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:04,643 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:59:04,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227442280] [2021-11-21 01:59:04,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:04,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:59:04,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:59:04,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:59:04,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:59:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:04,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:59:04,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:59:04,898 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 01:59:04,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:59:04,899 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:04,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702458178] [2021-11-21 01:59:04,899 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:59:04,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227442280] [2021-11-21 01:59:04,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227442280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:04,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:04,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:59:04,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097561597] [2021-11-21 01:59:04,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:04,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:59:04,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:04,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:59:04,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:59:04,905 INFO L87 Difference]: Start difference. First operand 153 states and 177 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:59:07,125 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:59:07,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:07,596 INFO L93 Difference]: Finished difference Result 261 states and 302 transitions. [2021-11-21 01:59:07,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:59:07,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-21 01:59:07,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:07,603 INFO L225 Difference]: With dead ends: 261 [2021-11-21 01:59:07,603 INFO L226 Difference]: Without dead ends: 259 [2021-11-21 01:59:07,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:59:07,605 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 106 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:07,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 443 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-21 01:59:07,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-21 01:59:07,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 249. [2021-11-21 01:59:07,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 216 states have (on average 1.25) internal successors, (270), 231 states have internal predecessors, (270), 14 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-21 01:59:07,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 298 transitions. [2021-11-21 01:59:07,633 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 298 transitions. Word has length 18 [2021-11-21 01:59:07,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:07,633 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 298 transitions. [2021-11-21 01:59:07,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:59:07,634 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 298 transitions. [2021-11-21 01:59:07,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 01:59:07,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:07,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:07,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-21 01:59:07,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-21 01:59:07,847 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-21 01:59:07,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:07,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1434406572, now seen corresponding path program 1 times [2021-11-21 01:59:07,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:07,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879734718] [2021-11-21 01:59:07,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:07,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:07,887 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:59:07,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639950023] [2021-11-21 01:59:07,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:07,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:59:07,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:59:07,889 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:59:07,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:59:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:08,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:59:08,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:59:08,123 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 01:59:08,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:59:08,124 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:08,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879734718] [2021-11-21 01:59:08,124 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:59:08,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639950023] [2021-11-21 01:59:08,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639950023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:08,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:08,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:59:08,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874776274] [2021-11-21 01:59:08,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:08,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:59:08,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:08,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:59:08,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:59:08,139 INFO L87 Difference]: Start difference. First operand 249 states and 298 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:59:10,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:10,081 INFO L93 Difference]: Finished difference Result 441 states and 532 transitions. [2021-11-21 01:59:10,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:59:10,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-21 01:59:10,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:10,092 INFO L225 Difference]: With dead ends: 441 [2021-11-21 01:59:10,092 INFO L226 Difference]: Without dead ends: 439 [2021-11-21 01:59:10,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:59:10,094 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 147 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:10,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 451 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-21 01:59:10,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-21 01:59:10,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 428. [2021-11-21 01:59:10,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 384 states have (on average 1.25) internal successors, (480), 400 states have internal predecessors, (480), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2021-11-21 01:59:10,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 529 transitions. [2021-11-21 01:59:10,148 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 529 transitions. Word has length 19 [2021-11-21 01:59:10,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:10,149 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 529 transitions. [2021-11-21 01:59:10,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:59:10,150 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 529 transitions. [2021-11-21 01:59:10,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-21 01:59:10,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:10,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:10,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-21 01:59:10,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:59:10,353 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-21 01:59:10,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:10,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1558573003, now seen corresponding path program 1 times [2021-11-21 01:59:10,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:10,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643036618] [2021-11-21 01:59:10,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:10,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:10,458 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 01:59:10,458 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:10,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643036618] [2021-11-21 01:59:10,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643036618] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:10,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:10,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:59:10,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553950142] [2021-11-21 01:59:10,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:10,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:59:10,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:10,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:59:10,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:59:10,461 INFO L87 Difference]: Start difference. First operand 428 states and 529 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:59:12,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:12,404 INFO L93 Difference]: Finished difference Result 682 states and 842 transitions. [2021-11-21 01:59:12,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:59:12,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-21 01:59:12,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:12,414 INFO L225 Difference]: With dead ends: 682 [2021-11-21 01:59:12,415 INFO L226 Difference]: Without dead ends: 562 [2021-11-21 01:59:12,416 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 01:59:12,417 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 56 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:12,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 412 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-21 01:59:12,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-11-21 01:59:12,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 428. [2021-11-21 01:59:12,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 384 states have (on average 1.2473958333333333) internal successors, (479), 400 states have internal predecessors, (479), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2021-11-21 01:59:12,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 528 transitions. [2021-11-21 01:59:12,464 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 528 transitions. Word has length 24 [2021-11-21 01:59:12,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:12,465 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 528 transitions. [2021-11-21 01:59:12,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:59:12,465 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 528 transitions. [2021-11-21 01:59:12,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-21 01:59:12,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:12,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:12,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:59:12,466 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-21 01:59:12,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:12,466 INFO L85 PathProgramCache]: Analyzing trace with hash -2115465486, now seen corresponding path program 1 times [2021-11-21 01:59:12,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:12,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796337524] [2021-11-21 01:59:12,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:12,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:12,478 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:59:12,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016401841] [2021-11-21 01:59:12,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:12,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:59:12,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:59:12,500 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:59:12,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:59:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:12,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:59:12,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:59:12,757 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 01:59:12,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:59:12,757 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:12,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796337524] [2021-11-21 01:59:12,758 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:59:12,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016401841] [2021-11-21 01:59:12,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016401841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:12,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:12,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 01:59:12,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214181329] [2021-11-21 01:59:12,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:12,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:59:12,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:12,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:59:12,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:59:12,760 INFO L87 Difference]: Start difference. First operand 428 states and 528 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 01:59:15,241 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:59:15,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:15,339 INFO L93 Difference]: Finished difference Result 454 states and 548 transitions. [2021-11-21 01:59:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:59:15,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-11-21 01:59:15,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:15,347 INFO L225 Difference]: With dead ends: 454 [2021-11-21 01:59:15,347 INFO L226 Difference]: Without dead ends: 453 [2021-11-21 01:59:15,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:59:15,348 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 112 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:15,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 304 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2021-11-21 01:59:15,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-11-21 01:59:15,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 443. [2021-11-21 01:59:15,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 394 states have (on average 1.2436548223350254) internal successors, (490), 411 states have internal predecessors, (490), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2021-11-21 01:59:15,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 545 transitions. [2021-11-21 01:59:15,375 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 545 transitions. Word has length 27 [2021-11-21 01:59:15,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:15,375 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 545 transitions. [2021-11-21 01:59:15,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 01:59:15,376 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 545 transitions. [2021-11-21 01:59:15,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-21 01:59:15,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:15,377 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 01:59:15,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:59:15,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:59:15,603 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-21 01:59:15,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:15,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1154920565, now seen corresponding path program 1 times [2021-11-21 01:59:15,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:15,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933835953] [2021-11-21 01:59:15,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:15,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:15,619 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:59:15,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895029593] [2021-11-21 01:59:15,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:15,635 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:59:15,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:59:15,636 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:59:15,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:59:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:15,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:59:15,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:59:15,890 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 01:59:15,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:59:15,890 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:15,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933835953] [2021-11-21 01:59:15,891 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:59:15,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895029593] [2021-11-21 01:59:15,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895029593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:15,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:15,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 01:59:15,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357347766] [2021-11-21 01:59:15,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:15,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:59:15,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:15,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:59:15,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:59:15,894 INFO L87 Difference]: Start difference. First operand 443 states and 545 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 01:59:16,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:16,239 INFO L93 Difference]: Finished difference Result 443 states and 545 transitions. [2021-11-21 01:59:16,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:59:16,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-11-21 01:59:16,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:16,247 INFO L225 Difference]: With dead ends: 443 [2021-11-21 01:59:16,247 INFO L226 Difference]: Without dead ends: 442 [2021-11-21 01:59:16,247 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 01:59:16,248 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 143 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:16,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 147 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:59:16,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-11-21 01:59:16,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-11-21 01:59:16,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 394 states have (on average 1.2385786802030456) internal successors, (488), 410 states have internal predecessors, (488), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2021-11-21 01:59:16,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 543 transitions. [2021-11-21 01:59:16,274 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 543 transitions. Word has length 28 [2021-11-21 01:59:16,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:16,274 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 543 transitions. [2021-11-21 01:59:16,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 01:59:16,275 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 543 transitions. [2021-11-21 01:59:16,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-21 01:59:16,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:16,276 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 01:59:16,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:59:16,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-21 01:59:16,483 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-21 01:59:16,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:16,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1356353724, now seen corresponding path program 1 times [2021-11-21 01:59:16,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:16,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752981763] [2021-11-21 01:59:16,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:16,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:16,494 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:59:16,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1766713942] [2021-11-21 01:59:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:16,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:59:16,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:59:16,502 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:59:16,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 01:59:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:16,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:59:16,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:59:16,819 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 01:59:16,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:59:16,820 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:16,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752981763] [2021-11-21 01:59:16,820 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:59:16,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766713942] [2021-11-21 01:59:16,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766713942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:16,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:16,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:59:16,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25963977] [2021-11-21 01:59:16,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:16,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:59:16,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:16,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:59:16,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:59:16,823 INFO L87 Difference]: Start difference. First operand 442 states and 543 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:59:17,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:17,469 INFO L93 Difference]: Finished difference Result 814 states and 992 transitions. [2021-11-21 01:59:17,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:59:17,474 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 01:59:17,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:17,477 INFO L225 Difference]: With dead ends: 814 [2021-11-21 01:59:17,477 INFO L226 Difference]: Without dead ends: 377 [2021-11-21 01:59:17,479 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 01:59:17,480 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 49 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:17,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 284 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:59:17,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-21 01:59:17,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 368. [2021-11-21 01:59:17,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 326 states have (on average 1.2147239263803682) internal successors, (396), 341 states have internal predecessors, (396), 21 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (24), 18 states have call predecessors, (24), 21 states have call successors, (24) [2021-11-21 01:59:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 441 transitions. [2021-11-21 01:59:17,501 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 441 transitions. Word has length 28 [2021-11-21 01:59:17,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:17,501 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 441 transitions. [2021-11-21 01:59:17,501 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 01:59:17,502 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 441 transitions. [2021-11-21 01:59:17,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-21 01:59:17,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:17,503 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:17,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:59:17,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:59:17,711 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-21 01:59:17,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:17,712 INFO L85 PathProgramCache]: Analyzing trace with hash 227049609, now seen corresponding path program 1 times [2021-11-21 01:59:17,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:17,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874267598] [2021-11-21 01:59:17,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:17,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:17,738 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:59:17,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [196031931] [2021-11-21 01:59:17,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:17,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:59:17,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:59:17,744 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:59:17,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 01:59:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:17,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:59:17,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:59:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:59:18,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:59:18,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:59:18,296 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:18,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874267598] [2021-11-21 01:59:18,296 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:59:18,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196031931] [2021-11-21 01:59:18,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196031931] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:59:18,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1181170666] [2021-11-21 01:59:18,321 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-21 01:59:18,321 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:59:18,326 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:59:18,331 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:59:18,331 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:59:18,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:18,424 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-21 01:59:18,425 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 01:59:18,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:18,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:18,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2021-11-21 01:59:18,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-21 01:59:18,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:18,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:59:18,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:59:18,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:59:18,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:59:18,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:18,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:18,811 INFO L354 Elim1Store]: treesize reduction 42, result has 42.5 percent of original size [2021-11-21 01:59:18,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 43 treesize of output 65 [2021-11-21 01:59:18,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-11-21 01:59:18,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:18,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:18,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2021-11-21 01:59:19,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:19,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:19,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:19,132 INFO L354 Elim1Store]: treesize reduction 70, result has 28.6 percent of original size [2021-11-21 01:59:19,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 37 treesize of output 61 [2021-11-21 01:59:19,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:19,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:19,210 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:59:19,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 38 [2021-11-21 01:59:19,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:59:19,685 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 01:59:19,710 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 01:59:19,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:19,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:19,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:19,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:19,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:19,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 69 [2021-11-21 01:59:19,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:19,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 76 [2021-11-21 01:59:21,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,898 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 01:59:21,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 89 [2021-11-21 01:59:21,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 82 [2021-11-21 01:59:21,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 77 [2021-11-21 01:59:21,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:21,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 85 [2021-11-21 01:59:22,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 01:59:22,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,271 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 01:59:22,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,368 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 01:59:22,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,499 INFO L354 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2021-11-21 01:59:22,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 114 treesize of output 104 [2021-11-21 01:59:22,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,554 INFO L354 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2021-11-21 01:59:22,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 97 [2021-11-21 01:59:22,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 96 [2021-11-21 01:59:22,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:22,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 88 [2021-11-21 01:59:23,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-21 01:59:23,060 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 01:59:23,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-21 01:59:23,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:59:23,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:59:23,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-21 01:59:23,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,274 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-11-21 01:59:23,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 70 [2021-11-21 01:59:23,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 43 [2021-11-21 01:59:23,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,389 INFO L354 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2021-11-21 01:59:23,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 23 [2021-11-21 01:59:23,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-21 01:59:23,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,482 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-11-21 01:59:23,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 01:59:23,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,863 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-11-21 01:59:23,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 32 [2021-11-21 01:59:23,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,928 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-21 01:59:23,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 23 [2021-11-21 01:59:23,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-21 01:59:23,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:23,978 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:59:23,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 58 [2021-11-21 01:59:23,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2021-11-21 01:59:24,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:24,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:24,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:24,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:24,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:24,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:24,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2021-11-21 01:59:24,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:24,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:24,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:24,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-21 01:59:24,401 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-21 01:59:24,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 306 treesize of output 272 [2021-11-21 01:59:24,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 287 treesize of output 283 [2021-11-21 01:59:24,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 298 treesize of output 294 [2021-11-21 01:59:26,321 INFO L197 IcfgInterpreter]: Interpreting procedure alt_bzero with input of size 89 for LOIs [2021-11-21 01:59:27,349 INFO L197 IcfgInterpreter]: Interpreting procedure alt_malloc with input of size 110 for LOIs [2021-11-21 01:59:28,381 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:59:31,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1181170666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:31,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:59:31,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [6, 7] total 32 [2021-11-21 01:59:31,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992626820] [2021-11-21 01:59:31,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:31,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-21 01:59:31,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:31,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-21 01:59:31,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2021-11-21 01:59:31,921 INFO L87 Difference]: Start difference. First operand 368 states and 441 transitions. Second operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 16 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:59:37,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:37,090 INFO L93 Difference]: Finished difference Result 725 states and 872 transitions. [2021-11-21 01:59:37,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 01:59:37,091 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 16 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-11-21 01:59:37,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:37,094 INFO L225 Difference]: With dead ends: 725 [2021-11-21 01:59:37,094 INFO L226 Difference]: Without dead ends: 365 [2021-11-21 01:59:37,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2021-11-21 01:59:37,096 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 9 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 446 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:37,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1031 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 448 Invalid, 0 Unknown, 446 Unchecked, 5.1s Time] [2021-11-21 01:59:37,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-21 01:59:37,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2021-11-21 01:59:37,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 323 states have (on average 1.2105263157894737) internal successors, (391), 337 states have internal predecessors, (391), 21 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (24), 18 states have call predecessors, (24), 21 states have call successors, (24) [2021-11-21 01:59:37,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 436 transitions. [2021-11-21 01:59:37,117 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 436 transitions. Word has length 34 [2021-11-21 01:59:37,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:37,118 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 436 transitions. [2021-11-21 01:59:37,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 16 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:59:37,118 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 436 transitions. [2021-11-21 01:59:37,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-21 01:59:37,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:37,120 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:37,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:59:37,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-21 01:59:37,347 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-21 01:59:37,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:37,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1472683514, now seen corresponding path program 1 times [2021-11-21 01:59:37,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:37,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044671462] [2021-11-21 01:59:37,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:37,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:37,377 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:59:37,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263388186] [2021-11-21 01:59:37,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:37,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:59:37,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:59:37,388 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:59:37,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 01:59:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:37,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:59:37,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:59:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:59:37,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:59:37,629 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:37,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044671462] [2021-11-21 01:59:37,629 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:59:37,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263388186] [2021-11-21 01:59:37,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263388186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:37,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:37,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:59:37,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556128103] [2021-11-21 01:59:37,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:37,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:59:37,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:37,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:59:37,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:59:37,632 INFO L87 Difference]: Start difference. First operand 365 states and 436 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 01:59:39,834 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:59:41,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:59:41,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:41,920 INFO L93 Difference]: Finished difference Result 664 states and 802 transitions. [2021-11-21 01:59:41,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:59:41,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2021-11-21 01:59:41,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:41,924 INFO L225 Difference]: With dead ends: 664 [2021-11-21 01:59:41,925 INFO L226 Difference]: Without dead ends: 662 [2021-11-21 01:59:41,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:59:41,926 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 151 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:41,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 678 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-21 01:59:41,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-11-21 01:59:41,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 650. [2021-11-21 01:59:41,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 593 states have (on average 1.2107925801011805) internal successors, (718), 607 states have internal predecessors, (718), 33 states have call successors, (33), 15 states have call predecessors, (33), 11 states have return successors, (44), 27 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-21 01:59:41,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 795 transitions. [2021-11-21 01:59:41,959 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 795 transitions. Word has length 37 [2021-11-21 01:59:41,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:41,960 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 795 transitions. [2021-11-21 01:59:41,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 01:59:41,960 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 795 transitions. [2021-11-21 01:59:41,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-21 01:59:41,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:41,962 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:41,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:59:42,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:59:42,167 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-21 01:59:42,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:42,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1507787838, now seen corresponding path program 1 times [2021-11-21 01:59:42,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:42,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753425486] [2021-11-21 01:59:42,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:42,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:42,178 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:59:42,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159173643] [2021-11-21 01:59:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:42,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:59:42,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:59:42,190 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:59:42,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 01:59:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:42,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:59:42,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:59:42,509 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:59:42,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:59:42,690 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:59:42,690 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:42,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753425486] [2021-11-21 01:59:42,690 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:59:42,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159173643] [2021-11-21 01:59:42,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159173643] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:59:42,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2135594394] [2021-11-21 01:59:42,694 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2021-11-21 01:59:42,694 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:59:42,694 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:59:42,694 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:59:42,695 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:59:42,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:42,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:59:42,769 INFO L354 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2021-11-21 01:59:42,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 70 [2021-11-21 01:59:42,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 70 [2021-11-21 01:59:42,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:42,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-21 01:59:42,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:59:42,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:42,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-11-21 01:59:42,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:42,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:42,936 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-21 01:59:42,936 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 01:59:42,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:59:42,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:42,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:59:42,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:59:43,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:59:43,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:43,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:43,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:43,189 INFO L354 Elim1Store]: treesize reduction 70, result has 28.6 percent of original size [2021-11-21 01:59:43,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 37 treesize of output 61 [2021-11-21 01:59:43,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:59:43,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:43,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:43,281 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:59:43,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 38 [2021-11-21 01:59:43,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:43,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:43,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:43,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:43,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:43,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 45 [2021-11-21 01:59:43,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2021-11-21 01:59:43,581 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 01:59:43,600 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 01:59:43,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:43,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:43,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:43,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:43,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:43,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 69 [2021-11-21 01:59:43,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:43,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 76 [2021-11-21 01:59:45,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,611 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 01:59:45,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,646 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 01:59:45,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 89 [2021-11-21 01:59:45,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 86 [2021-11-21 01:59:45,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 72 [2021-11-21 01:59:45,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:45,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 85 [2021-11-21 01:59:46,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,010 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 01:59:46,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,035 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 01:59:46,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,217 INFO L354 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2021-11-21 01:59:46,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 114 treesize of output 104 [2021-11-21 01:59:46,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,255 INFO L354 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2021-11-21 01:59:46,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 97 [2021-11-21 01:59:46,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 96 [2021-11-21 01:59:46,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 88 [2021-11-21 01:59:46,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-21 01:59:46,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-21 01:59:46,683 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 01:59:46,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:59:46,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:59:46,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-21 01:59:46,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-21 01:59:46,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,922 INFO L354 Elim1Store]: treesize reduction 45, result has 8.2 percent of original size [2021-11-21 01:59:46,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 23 [2021-11-21 01:59:46,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:46,997 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-11-21 01:59:46,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 70 [2021-11-21 01:59:47,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 43 [2021-11-21 01:59:47,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:59:47,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,113 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-11-21 01:59:47,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 01:59:47,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-21 01:59:47,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-21 01:59:47,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,537 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-11-21 01:59:47,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 32 [2021-11-21 01:59:47,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,608 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-21 01:59:47,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 23 [2021-11-21 01:59:47,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,635 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:59:47,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 58 [2021-11-21 01:59:47,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2021-11-21 01:59:47,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:47,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2021-11-21 01:59:47,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 234 treesize of output 230 [2021-11-21 01:59:47,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 245 treesize of output 241 [2021-11-21 01:59:48,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 01:59:49,418 INFO L197 IcfgInterpreter]: Interpreting procedure alt_bzero with input of size 78 for LOIs [2021-11-21 01:59:50,379 INFO L197 IcfgInterpreter]: Interpreting procedure alt_malloc with input of size 110 for LOIs [2021-11-21 01:59:51,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:51,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:51,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:51,763 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:59:51,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 197 treesize of output 181 [2021-11-21 01:59:51,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:51,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:51,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:51,776 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:59:51,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 172 treesize of output 156 [2021-11-21 01:59:51,804 INFO L354 Elim1Store]: treesize reduction 84, result has 11.6 percent of original size [2021-11-21 01:59:51,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 147 treesize of output 139 [2021-11-21 01:59:52,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:52,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:52,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:52,425 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:59:52,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 197 treesize of output 181 [2021-11-21 01:59:52,476 INFO L354 Elim1Store]: treesize reduction 84, result has 11.6 percent of original size [2021-11-21 01:59:52,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 172 treesize of output 164 [2021-11-21 01:59:52,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:52,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:52,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:52,496 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:59:52,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 164 treesize of output 148 [2021-11-21 01:59:53,536 INFO L354 Elim1Store]: treesize reduction 84, result has 11.6 percent of original size [2021-11-21 01:59:53,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 197 treesize of output 189 [2021-11-21 01:59:53,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:53,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:53,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:53,556 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:59:53,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 173 [2021-11-21 01:59:53,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:53,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:53,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:59:53,575 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:59:53,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 164 treesize of output 148 [2021-11-21 01:59:53,755 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 102 for LOIs [2021-11-21 01:59:53,957 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:59:57,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2135594394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:57,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:59:57,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 5] total 31 [2021-11-21 01:59:57,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025680869] [2021-11-21 01:59:57,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:57,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-21 01:59:57,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:57,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-21 01:59:57,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2021-11-21 01:59:57,681 INFO L87 Difference]: Start difference. First operand 650 states and 795 transitions. Second operand has 23 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 02:00:01,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:00:03,742 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:00:06,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 02:00:07,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 02:00:07,575 INFO L93 Difference]: Finished difference Result 1272 states and 1563 transitions. [2021-11-21 02:00:07,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-21 02:00:07,576 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 46 [2021-11-21 02:00:07,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 02:00:07,579 INFO L225 Difference]: With dead ends: 1272 [2021-11-21 02:00:07,580 INFO L226 Difference]: Without dead ends: 652 [2021-11-21 02:00:07,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 104 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2021-11-21 02:00:07,582 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 8 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 518 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-21 02:00:07,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 1623 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 698 Invalid, 1 Unknown, 518 Unchecked, 9.8s Time] [2021-11-21 02:00:07,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-11-21 02:00:07,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2021-11-21 02:00:07,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 595 states have (on average 1.2100840336134453) internal successors, (720), 609 states have internal predecessors, (720), 33 states have call successors, (33), 15 states have call predecessors, (33), 11 states have return successors, (44), 27 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-21 02:00:07,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 797 transitions. [2021-11-21 02:00:07,615 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 797 transitions. Word has length 46 [2021-11-21 02:00:07,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 02:00:07,615 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 797 transitions. [2021-11-21 02:00:07,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 02:00:07,616 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 797 transitions. [2021-11-21 02:00:07,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-21 02:00:07,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 02:00:07,617 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 02:00:07,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-21 02:00:07,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-21 02:00:07,843 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-21 02:00:07,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 02:00:07,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2074882063, now seen corresponding path program 1 times [2021-11-21 02:00:07,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 02:00:07,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334180439] [2021-11-21 02:00:07,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:00:07,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 02:00:07,873 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 02:00:07,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1067332653] [2021-11-21 02:00:07,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 02:00:07,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 02:00:07,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 02:00:07,877 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 02:00:07,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f359ba05-33d7-4a21-a261-fca099fd0918/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 02:00:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 02:00:08,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 02:00:08,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:00:08,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 02:00:08,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:00:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-21 02:00:08,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 02:00:08,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334180439] [2021-11-21 02:00:08,335 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 02:00:08,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067332653] [2021-11-21 02:00:08,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067332653] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 02:00:08,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1461959116] [2021-11-21 02:00:08,338 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2021-11-21 02:00:08,339 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 02:00:08,339 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 02:00:08,339 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 02:00:08,340 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 02:00:08,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:08,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:08,393 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-21 02:00:08,394 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 02:00:08,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 02:00:08,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:08,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:08,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2021-11-21 02:00:08,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-21 02:00:08,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:08,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 02:00:08,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 02:00:08,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:08,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:08,668 INFO L354 Elim1Store]: treesize reduction 50, result has 32.4 percent of original size [2021-11-21 02:00:08,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 27 treesize of output 46 [2021-11-21 02:00:08,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 02:00:08,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 02:00:08,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:08,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:08,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:08,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:08,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:08,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:08,834 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-21 02:00:08,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2021-11-21 02:00:08,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:08,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:08,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:08,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:08,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:08,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 45 [2021-11-21 02:00:08,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2021-11-21 02:00:09,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:09,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:09,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:09,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:09,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:09,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 69 [2021-11-21 02:00:09,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:09,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 76 [2021-11-21 02:00:09,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 02:00:09,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 02:00:11,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,231 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 02:00:11,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 02:00:11,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 89 [2021-11-21 02:00:11,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 82 [2021-11-21 02:00:11,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 77 [2021-11-21 02:00:11,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 85 [2021-11-21 02:00:11,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,683 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 02:00:11,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,766 INFO L354 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2021-11-21 02:00:11,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 114 treesize of output 104 [2021-11-21 02:00:11,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,813 INFO L354 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2021-11-21 02:00:11,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 97 [2021-11-21 02:00:11,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 96 [2021-11-21 02:00:11,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:11,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 88 [2021-11-21 02:00:12,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,069 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 02:00:12,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-21 02:00:12,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-21 02:00:12,414 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 02:00:12,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 02:00:12,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 02:00:12,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,580 INFO L354 Elim1Store]: treesize reduction 45, result has 8.2 percent of original size [2021-11-21 02:00:12,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 23 [2021-11-21 02:00:12,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-21 02:00:12,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-21 02:00:12,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,697 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-11-21 02:00:12,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 32 [2021-11-21 02:00:12,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,784 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 02:00:12,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 58 [2021-11-21 02:00:12,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:12,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 30 [2021-11-21 02:00:12,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-21 02:00:13,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-21 02:00:13,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,248 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-11-21 02:00:13,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 32 [2021-11-21 02:00:13,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-21 02:00:13,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,324 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 02:00:13,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 58 [2021-11-21 02:00:13,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 30 [2021-11-21 02:00:13,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-21 02:00:13,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:13,375 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 02:00:13,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 23 [2021-11-21 02:00:13,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-21 02:00:13,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 02:00:13,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-21 02:00:14,127 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 02:00:14,152 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 02:00:14,164 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 02:00:14,223 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-21 02:00:14,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 136 [2021-11-21 02:00:14,252 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-21 02:00:14,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 132 [2021-11-21 02:00:14,276 INFO L354 Elim1Store]: treesize reduction 34, result has 22.7 percent of original size [2021-11-21 02:00:14,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 128 [2021-11-21 02:00:14,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 02:00:14,398 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 02:00:14,410 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 02:00:14,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-21 02:00:14,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2021-11-21 02:00:14,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-21 02:00:14,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2021-11-21 02:00:16,568 INFO L354 Elim1Store]: treesize reduction 348, result has 15.7 percent of original size [2021-11-21 02:00:16,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 1526 treesize of output 1147 [2021-11-21 02:00:16,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:18,085 INFO L354 Elim1Store]: treesize reduction 262, result has 32.6 percent of original size [2021-11-21 02:00:18,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 1583 treesize of output 1349 [2021-11-21 02:00:19,658 INFO L354 Elim1Store]: treesize reduction 1190, result has 35.1 percent of original size [2021-11-21 02:00:19,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 1383 treesize of output 1461 [2021-11-21 02:00:20,457 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 02:00:20,533 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 02:00:20,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:20,748 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-11-21 02:00:20,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 20 [2021-11-21 02:00:20,907 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 02:00:21,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:21,172 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 02:00:21,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 63 [2021-11-21 02:00:21,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:21,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2021-11-21 02:00:21,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:22,007 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-11-21 02:00:22,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 26 [2021-11-21 02:00:22,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:00:22,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:22,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-21 02:00:22,586 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 02:00:26,249 INFO L354 Elim1Store]: treesize reduction 759, result has 27.4 percent of original size [2021-11-21 02:00:26,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 2629 treesize of output 2155 [2021-11-21 02:00:26,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:26,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:27,761 INFO L354 Elim1Store]: treesize reduction 206, result has 65.7 percent of original size [2021-11-21 02:00:27,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 2147 treesize of output 2401 [2021-11-21 02:00:27,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:00:28,743 INFO L354 Elim1Store]: treesize reduction 134, result has 69.6 percent of original size [2021-11-21 02:00:28,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 2401 treesize of output 2615 [2021-11-21 02:01:04,666 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 02:01:04,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:01:04,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:04,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:04,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:04,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 26 [2021-11-21 02:01:07,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:07,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:07,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:07,463 INFO L354 Elim1Store]: treesize reduction 54, result has 57.5 percent of original size [2021-11-21 02:01:07,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 85 [2021-11-21 02:01:08,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:08,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:08,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:08,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:08,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:08,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:01:08,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 13 [2021-11-21 02:01:08,494 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 02:01:08,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:01:08,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:08,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:01:08,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:08,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:08,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:09,019 INFO L354 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2021-11-21 02:01:09,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 1 [2021-11-21 02:01:10,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:10,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:01:10,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:10,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:10,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 10 [2021-11-21 02:01:10,605 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 02:01:12,474 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 02:01:12,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:12,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:12,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:12,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 13 [2021-11-21 02:01:13,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:13,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:13,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:13,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 10 [2021-11-21 02:01:14,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:14,360 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:01:14,385 INFO L244 Elim1Store]: Index analysis took 132 ms [2021-11-21 02:01:15,112 INFO L354 Elim1Store]: treesize reduction 101, result has 33.1 percent of original size [2021-11-21 02:01:15,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 87 treesize of output 78 [2021-11-21 02:01:30,520 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 02:01:30,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:01:31,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:31,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:31,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:31,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 26 [2021-11-21 02:01:32,855 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 02:01:34,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:01:34,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:34,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:01:34,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:34,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:34,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 26 [2021-11-21 02:01:34,746 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 02:01:35,344 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 02:01:35,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 02:01:35,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:35,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:35,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:35,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 10 [2021-11-21 02:01:48,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:48,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:48,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:48,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:48,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:48,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 02:01:48,756 INFO L244 Elim1Store]: Index analysis took 119 ms [2021-11-21 02:01:48,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 13 [2021-11-21 02:02:00,594 WARN L234 Elim1Store]: Array PQE input equivalent to false