./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh --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 e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 15:04:46,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:04:46,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:04:46,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:04:46,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:04:46,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:04:46,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:04:46,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:04:46,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:04:46,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:04:46,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:04:46,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:04:46,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:04:46,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:04:46,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:04:46,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:04:46,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:04:46,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:04:46,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:04:46,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:04:46,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:04:46,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:04:46,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:04:46,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:04:46,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:04:46,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:04:46,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:04:46,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:04:46,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:04:46,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:04:46,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:04:46,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:04:46,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:04:46,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:04:46,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:04:46,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:04:46,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:04:46,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:04:46,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:04:46,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:04:46,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:04:46,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 15:04:46,438 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:04:46,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:04:46,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:04:46,445 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:04:46,446 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:04:46,446 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:04:46,446 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:04:46,446 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:04:46,447 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:04:46,447 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:04:46,447 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:04:46,447 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:04:46,447 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:04:46,448 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:04:46,448 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:04:46,448 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:04:46,448 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:04:46,448 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:04:46,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:04:46,449 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:04:46,450 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 15:04:46,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:04:46,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:04:46,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:04:46,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:04:46,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:04:46,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:04:46,451 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 15:04:46,451 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:04:46,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:04:46,451 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:04:46,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:04:46,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:04:46,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:04:46,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:04:46,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:04:46,453 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:04:46,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:04:46,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:04:46,453 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:04:46,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:04:46,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:04:46,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:04:46,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 [2022-12-14 15:04:46,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:04:46,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:04:46,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:04:46,650 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:04:46,650 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:04:46,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2022-12-14 15:04:49,283 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:04:49,525 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:04:49,526 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2022-12-14 15:04:49,540 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/data/adaccc8a3/50bd7c24e9bb4f88aa11ea486d71dcf5/FLAG4c2c70844 [2022-12-14 15:04:49,551 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/data/adaccc8a3/50bd7c24e9bb4f88aa11ea486d71dcf5 [2022-12-14 15:04:49,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:04:49,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:04:49,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:04:49,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:04:49,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:04:49,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:04:49" (1/1) ... [2022-12-14 15:04:49,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@158756fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:04:49, skipping insertion in model container [2022-12-14 15:04:49,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:04:49" (1/1) ... [2022-12-14 15:04:49,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:04:49,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:04:49,978 WARN L237 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_9acb081a-2d65-4c18-b0d8-281927bda9cf/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2022-12-14 15:04:49,988 WARN L237 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_9acb081a-2d65-4c18-b0d8-281927bda9cf/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2022-12-14 15:04:49,990 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 15:04:50,084 WARN L237 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_9acb081a-2d65-4c18-b0d8-281927bda9cf/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2022-12-14 15:04:50,085 WARN L237 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_9acb081a-2d65-4c18-b0d8-281927bda9cf/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2022-12-14 15:04:50,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:04:50,102 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:04:50,133 WARN L237 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_9acb081a-2d65-4c18-b0d8-281927bda9cf/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2022-12-14 15:04:50,135 WARN L237 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_9acb081a-2d65-4c18-b0d8-281927bda9cf/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2022-12-14 15:04:50,135 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 15:04:50,173 WARN L237 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_9acb081a-2d65-4c18-b0d8-281927bda9cf/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2022-12-14 15:04:50,173 WARN L237 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_9acb081a-2d65-4c18-b0d8-281927bda9cf/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2022-12-14 15:04:50,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:04:50,218 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:04:50,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:04:50 WrapperNode [2022-12-14 15:04:50,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:04:50,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:04:50,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:04:50,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:04:50,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:04:50" (1/1) ... [2022-12-14 15:04:50,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:04:50" (1/1) ... [2022-12-14 15:04:50,283 INFO L138 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1205 [2022-12-14 15:04:50,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:04:50,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:04:50,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:04:50,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:04:50,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:04:50" (1/1) ... [2022-12-14 15:04:50,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:04:50" (1/1) ... [2022-12-14 15:04:50,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:04:50" (1/1) ... [2022-12-14 15:04:50,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:04:50" (1/1) ... [2022-12-14 15:04:50,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:04:50" (1/1) ... [2022-12-14 15:04:50,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:04:50" (1/1) ... [2022-12-14 15:04:50,336 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:04:50" (1/1) ... [2022-12-14 15:04:50,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:04:50" (1/1) ... [2022-12-14 15:04:50,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:04:50,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:04:50,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:04:50,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:04:50,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:04:50" (1/1) ... [2022-12-14 15:04:50,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:04:50,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:04:50,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:04:50,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:04:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 15:04:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 15:04:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 15:04:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 15:04:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-12-14 15:04:50,402 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-12-14 15:04:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 15:04:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 15:04:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 15:04:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 15:04:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 15:04:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:04:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-12-14 15:04:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-12-14 15:04:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 15:04:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-12-14 15:04:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-12-14 15:04:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 15:04:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:04:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:04:50,586 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:04:50,588 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:04:51,581 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:04:51,943 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:04:51,944 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-12-14 15:04:51,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:04:51 BoogieIcfgContainer [2022-12-14 15:04:51,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:04:51,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:04:51,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:04:51,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:04:51,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:04:49" (1/3) ... [2022-12-14 15:04:51,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd1075d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:04:51, skipping insertion in model container [2022-12-14 15:04:51,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:04:50" (2/3) ... [2022-12-14 15:04:51,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd1075d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:04:51, skipping insertion in model container [2022-12-14 15:04:51,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:04:51" (3/3) ... [2022-12-14 15:04:51,953 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test6-2.i [2022-12-14 15:04:51,966 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:04:51,967 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-12-14 15:04:52,002 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:04:52,006 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@63ada515, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:04:52,006 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-12-14 15:04:52,011 INFO L276 IsEmpty]: Start isEmpty. Operand has 176 states, 142 states have (on average 1.7394366197183098) internal successors, (247), 156 states have internal predecessors, (247), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-14 15:04:52,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 15:04:52,016 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:04:52,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 15:04:52,017 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 15:04:52,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:04:52,020 INFO L85 PathProgramCache]: Analyzing trace with hash 31179180, now seen corresponding path program 1 times [2022-12-14 15:04:52,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:04:52,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483545980] [2022-12-14 15:04:52,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:04:52,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:04:52,131 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:04:52,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477370722] [2022-12-14 15:04:52,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:04:52,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:04:52,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:04:52,133 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:04:52,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 15:04:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:04:52,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 15:04:52,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:04:52,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 15:04:52,397 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-12-14 15:04:52,397 INFO L350 Elim1Store]: Elim1 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 36 treesize of output 74 [2022-12-14 15:04:52,406 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-12-14 15:04:52,416 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-12-14 15:04:52,514 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 16 treesize of output 5 [2022-12-14 15:04:52,516 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 15:04:52,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:04:52,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 15:04:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:04:52,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:04:52,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:04:52,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483545980] [2022-12-14 15:04:52,568 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:04:52,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477370722] [2022-12-14 15:04:52,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477370722] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:04:52,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:04:52,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:04:52,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88737055] [2022-12-14 15:04:52,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:04:52,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:04:52,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:04:52,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:04:52,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:04:52,600 INFO L87 Difference]: Start difference. First operand has 176 states, 142 states have (on average 1.7394366197183098) internal successors, (247), 156 states have internal predecessors, (247), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) 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) [2022-12-14 15:04:53,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:04:53,673 INFO L93 Difference]: Finished difference Result 416 states and 678 transitions. [2022-12-14 15:04:53,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:04:53,675 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 [2022-12-14 15:04:53,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:04:53,682 INFO L225 Difference]: With dead ends: 416 [2022-12-14 15:04:53,682 INFO L226 Difference]: Without dead ends: 240 [2022-12-14 15:04:53,684 INFO L412 NwaCegarLoop]: 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 [2022-12-14 15:04:53,686 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 68 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:04:53,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 462 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 15:04:53,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-12-14 15:04:53,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 177. [2022-12-14 15:04:53,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 144 states have (on average 1.2430555555555556) internal successors, (179), 158 states have internal predecessors, (179), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-14 15:04:53,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 209 transitions. [2022-12-14 15:04:53,738 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 209 transitions. Word has length 4 [2022-12-14 15:04:53,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:04:53,738 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 209 transitions. [2022-12-14 15:04:53,739 INFO L496 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) [2022-12-14 15:04:53,739 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 209 transitions. [2022-12-14 15:04:53,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 15:04:53,740 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:04:53,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:04:53,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 15:04:53,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 15:04:53,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 15:04:53,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:04:53,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1356850095, now seen corresponding path program 1 times [2022-12-14 15:04:53,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:04:53,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213199230] [2022-12-14 15:04:53,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:04:53,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:04:53,975 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:04:53,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [273170433] [2022-12-14 15:04:53,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:04:53,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:04:53,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:04:53,976 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:04:53,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 15:04:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:04:54,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 15:04:54,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:04:54,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:04:54,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:04:54,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:04:54,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213199230] [2022-12-14 15:04:54,172 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:04:54,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273170433] [2022-12-14 15:04:54,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273170433] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:04:54,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:04:54,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:04:54,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882342103] [2022-12-14 15:04:54,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:04:54,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:04:54,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:04:54,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:04:54,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:04:54,174 INFO L87 Difference]: Start difference. First operand 177 states and 209 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) [2022-12-14 15:04:55,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:04:55,287 INFO L93 Difference]: Finished difference Result 337 states and 402 transitions. [2022-12-14 15:04:55,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:04:55,292 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 [2022-12-14 15:04:55,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:04:55,294 INFO L225 Difference]: With dead ends: 337 [2022-12-14 15:04:55,294 INFO L226 Difference]: Without dead ends: 335 [2022-12-14 15:04:55,294 INFO L412 NwaCegarLoop]: 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 [2022-12-14 15:04:55,295 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 175 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:04:55,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 538 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 15:04:55,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-12-14 15:04:55,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 323. [2022-12-14 15:04:55,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 275 states have (on average 1.24) internal successors, (341), 291 states have internal predecessors, (341), 27 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2022-12-14 15:04:55,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 398 transitions. [2022-12-14 15:04:55,312 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 398 transitions. Word has length 18 [2022-12-14 15:04:55,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:04:55,312 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 398 transitions. [2022-12-14 15:04:55,312 INFO L496 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) [2022-12-14 15:04:55,312 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 398 transitions. [2022-12-14 15:04:55,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 15:04:55,313 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:04:55,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:04:55,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 15:04:55,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:04:55,515 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 15:04:55,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:04:55,516 INFO L85 PathProgramCache]: Analyzing trace with hash 887320049, now seen corresponding path program 1 times [2022-12-14 15:04:55,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:04:55,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333654481] [2022-12-14 15:04:55,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:04:55,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:04:55,588 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:04:55,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095311174] [2022-12-14 15:04:55,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:04:55,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:04:55,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:04:55,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:04:55,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 15:04:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:04:55,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 15:04:55,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:04:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:04:55,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:04:55,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:04:55,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333654481] [2022-12-14 15:04:55,771 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:04:55,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095311174] [2022-12-14 15:04:55,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095311174] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:04:55,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:04:55,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:04:55,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979070834] [2022-12-14 15:04:55,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:04:55,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:04:55,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:04:55,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:04:55,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:04:55,773 INFO L87 Difference]: Start difference. First operand 323 states and 398 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) [2022-12-14 15:04:57,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:04:57,595 INFO L93 Difference]: Finished difference Result 533 states and 652 transitions. [2022-12-14 15:04:57,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:04:57,595 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 [2022-12-14 15:04:57,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:04:57,597 INFO L225 Difference]: With dead ends: 533 [2022-12-14 15:04:57,597 INFO L226 Difference]: Without dead ends: 531 [2022-12-14 15:04:57,598 INFO L412 NwaCegarLoop]: 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 [2022-12-14 15:04:57,598 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 136 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 15:04:57,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 532 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 15:04:57,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-12-14 15:04:57,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 523. [2022-12-14 15:04:57,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 458 states have (on average 1.2336244541484715) internal successors, (565), 476 states have internal predecessors, (565), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2022-12-14 15:04:57,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 650 transitions. [2022-12-14 15:04:57,620 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 650 transitions. Word has length 19 [2022-12-14 15:04:57,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:04:57,620 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 650 transitions. [2022-12-14 15:04:57,620 INFO L496 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) [2022-12-14 15:04:57,620 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 650 transitions. [2022-12-14 15:04:57,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 15:04:57,621 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:04:57,621 INFO L195 NwaCegarLoop]: 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] [2022-12-14 15:04:57,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 15:04:57,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:04:57,822 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 15:04:57,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:04:57,824 INFO L85 PathProgramCache]: Analyzing trace with hash 310210136, now seen corresponding path program 1 times [2022-12-14 15:04:57,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:04:57,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026357585] [2022-12-14 15:04:57,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:04:57,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:04:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:04:58,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:04:58,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:04:58,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026357585] [2022-12-14 15:04:58,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026357585] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:04:58,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:04:58,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:04:58,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975136879] [2022-12-14 15:04:58,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:04:58,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:04:58,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:04:58,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:04:58,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:04:58,169 INFO L87 Difference]: Start difference. First operand 523 states and 650 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) [2022-12-14 15:04:59,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:04:59,289 INFO L93 Difference]: Finished difference Result 869 states and 1090 transitions. [2022-12-14 15:04:59,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:04:59,292 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 [2022-12-14 15:04:59,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:04:59,294 INFO L225 Difference]: With dead ends: 869 [2022-12-14 15:04:59,294 INFO L226 Difference]: Without dead ends: 701 [2022-12-14 15:04:59,294 INFO L412 NwaCegarLoop]: 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 [2022-12-14 15:04:59,295 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 67 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:04:59,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 489 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 15:04:59,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-12-14 15:04:59,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 523. [2022-12-14 15:04:59,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 458 states have (on average 1.2314410480349345) internal successors, (564), 476 states have internal predecessors, (564), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2022-12-14 15:04:59,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 649 transitions. [2022-12-14 15:04:59,315 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 649 transitions. Word has length 24 [2022-12-14 15:04:59,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:04:59,315 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 649 transitions. [2022-12-14 15:04:59,315 INFO L496 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) [2022-12-14 15:04:59,315 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 649 transitions. [2022-12-14 15:04:59,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 15:04:59,316 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:04:59,316 INFO L195 NwaCegarLoop]: 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] [2022-12-14 15:04:59,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 15:04:59,316 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 15:04:59,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:04:59,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1082015607, now seen corresponding path program 1 times [2022-12-14 15:04:59,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:04:59,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869829819] [2022-12-14 15:04:59,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:04:59,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:04:59,339 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:04:59,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291348654] [2022-12-14 15:04:59,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:04:59,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:04:59,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:04:59,341 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:04:59,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 15:04:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:04:59,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 15:04:59,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:04:59,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:04:59,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:04:59,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:04:59,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869829819] [2022-12-14 15:04:59,549 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:04:59,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291348654] [2022-12-14 15:04:59,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291348654] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:04:59,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:04:59,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 15:04:59,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244500216] [2022-12-14 15:04:59,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:04:59,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:04:59,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:04:59,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:04:59,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:04:59,551 INFO L87 Difference]: Start difference. First operand 523 states and 649 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) [2022-12-14 15:05:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:05:00,342 INFO L93 Difference]: Finished difference Result 523 states and 649 transitions. [2022-12-14 15:05:00,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:05:00,345 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 [2022-12-14 15:05:00,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:05:00,346 INFO L225 Difference]: With dead ends: 523 [2022-12-14 15:05:00,347 INFO L226 Difference]: Without dead ends: 522 [2022-12-14 15:05:00,347 INFO L412 NwaCegarLoop]: 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 [2022-12-14 15:05:00,347 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 176 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 15:05:00,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 173 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 15:05:00,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-12-14 15:05:00,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2022-12-14 15:05:00,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 458 states have (on average 1.2270742358078603) internal successors, (562), 475 states have internal predecessors, (562), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2022-12-14 15:05:00,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 647 transitions. [2022-12-14 15:05:00,363 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 647 transitions. Word has length 27 [2022-12-14 15:05:00,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:05:00,364 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 647 transitions. [2022-12-14 15:05:00,364 INFO L496 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) [2022-12-14 15:05:00,364 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 647 transitions. [2022-12-14 15:05:00,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 15:05:00,364 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:05:00,364 INFO L195 NwaCegarLoop]: 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] [2022-12-14 15:05:00,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 15:05:00,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:05:00,565 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 15:05:00,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:05:00,565 INFO L85 PathProgramCache]: Analyzing trace with hash -817254490, now seen corresponding path program 1 times [2022-12-14 15:05:00,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:05:00,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005139415] [2022-12-14 15:05:00,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:05:00,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:05:00,585 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:05:00,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347595115] [2022-12-14 15:05:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:05:00,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:05:00,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:05:00,586 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:05:00,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 15:05:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:05:00,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 15:05:00,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:05:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:05:00,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:05:00,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:05:00,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005139415] [2022-12-14 15:05:00,809 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:05:00,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347595115] [2022-12-14 15:05:00,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347595115] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:05:00,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:05:00,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 15:05:00,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558229673] [2022-12-14 15:05:00,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:05:00,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:05:00,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:05:00,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:05:00,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:05:00,811 INFO L87 Difference]: Start difference. First operand 522 states and 647 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) [2022-12-14 15:05:01,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:05:01,493 INFO L93 Difference]: Finished difference Result 547 states and 665 transitions. [2022-12-14 15:05:01,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:05:01,496 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 [2022-12-14 15:05:01,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:05:01,497 INFO L225 Difference]: With dead ends: 547 [2022-12-14 15:05:01,498 INFO L226 Difference]: Without dead ends: 546 [2022-12-14 15:05:01,498 INFO L412 NwaCegarLoop]: 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 [2022-12-14 15:05:01,498 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 142 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 15:05:01,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 361 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 15:05:01,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-12-14 15:05:01,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 537. [2022-12-14 15:05:01,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 468 states have (on average 1.2243589743589745) internal successors, (573), 486 states have internal predecessors, (573), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2022-12-14 15:05:01,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 664 transitions. [2022-12-14 15:05:01,525 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 664 transitions. Word has length 28 [2022-12-14 15:05:01,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:05:01,525 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 664 transitions. [2022-12-14 15:05:01,525 INFO L496 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) [2022-12-14 15:05:01,525 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 664 transitions. [2022-12-14 15:05:01,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 15:05:01,526 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:05:01,526 INFO L195 NwaCegarLoop]: 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] [2022-12-14 15:05:01,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 15:05:01,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:05:01,728 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 15:05:01,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:05:01,729 INFO L85 PathProgramCache]: Analyzing trace with hash 407611559, now seen corresponding path program 1 times [2022-12-14 15:05:01,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:05:01,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283043459] [2022-12-14 15:05:01,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:05:01,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:05:01,841 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:05:01,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737038820] [2022-12-14 15:05:01,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:05:01,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:05:01,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:05:01,842 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:05:01,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 15:05:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:05:02,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 15:05:02,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:05:02,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:05:02,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:05:02,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:05:02,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283043459] [2022-12-14 15:05:02,415 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:05:02,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737038820] [2022-12-14 15:05:02,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737038820] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:05:02,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:05:02,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:05:02,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673972654] [2022-12-14 15:05:02,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:05:02,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:05:02,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:05:02,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:05:02,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:05:02,416 INFO L87 Difference]: Start difference. First operand 537 states and 664 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) [2022-12-14 15:05:04,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 15:05:04,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:05:04,895 INFO L93 Difference]: Finished difference Result 999 states and 1231 transitions. [2022-12-14 15:05:04,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:05:04,897 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 [2022-12-14 15:05:04,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:05:04,901 INFO L225 Difference]: With dead ends: 999 [2022-12-14 15:05:04,901 INFO L226 Difference]: Without dead ends: 467 [2022-12-14 15:05:04,902 INFO L412 NwaCegarLoop]: 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 [2022-12-14 15:05:04,903 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 68 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 15:05:04,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 344 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 96 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 15:05:04,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-12-14 15:05:04,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 415. [2022-12-14 15:05:04,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 363 states have (on average 1.2121212121212122) internal successors, (440), 379 states have internal predecessors, (440), 30 states have call successors, (30), 11 states have call predecessors, (30), 9 states have return successors, (33), 26 states have call predecessors, (33), 30 states have call successors, (33) [2022-12-14 15:05:04,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 503 transitions. [2022-12-14 15:05:04,915 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 503 transitions. Word has length 28 [2022-12-14 15:05:04,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:05:04,915 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 503 transitions. [2022-12-14 15:05:04,915 INFO L496 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) [2022-12-14 15:05:04,916 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 503 transitions. [2022-12-14 15:05:04,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-14 15:05:04,916 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:05:04,916 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:05:04,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 15:05:05,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:05:05,118 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 15:05:05,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:05:05,119 INFO L85 PathProgramCache]: Analyzing trace with hash -357382328, now seen corresponding path program 1 times [2022-12-14 15:05:05,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:05:05,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822155413] [2022-12-14 15:05:05,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:05:05,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:05:05,176 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:05:05,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849868163] [2022-12-14 15:05:05,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:05:05,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:05:05,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:05:05,177 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:05:05,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9acb081a-2d65-4c18-b0d8-281927bda9cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 15:05:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:05:05,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 15:05:05,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:05:05,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:05:05,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:05:05,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:05:05,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:05:05,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822155413] [2022-12-14 15:05:05,606 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:05:05,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849868163] [2022-12-14 15:05:05,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849868163] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:05:05,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1234014315] [2022-12-14 15:05:05,622 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-12-14 15:05:05,622 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:05:05,624 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:05:05,628 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:05:05,628 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:05:05,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 15:05:05,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 15:05:05,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:05,708 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 15:05:05,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2022-12-14 15:05:05,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:05,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:05:05,742 INFO L321 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2022-12-14 15:05:05,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 93 [2022-12-14 15:05:05,753 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-12-14 15:05:05,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:05,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:05:05,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 21 [2022-12-14 15:05:05,785 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 15:05:05,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:05,823 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 15:05:05,823 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 15:05:05,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:05,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:05,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:05,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:05,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:05,928 INFO L321 Elim1Store]: treesize reduction 34, result has 47.7 percent of original size [2022-12-14 15:05:05,928 INFO L350 Elim1Store]: Elim1 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 4 case distinctions, treesize of input 93 treesize of output 105 [2022-12-14 15:05:05,949 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 15:05:05,973 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:05:05,974 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 87 [2022-12-14 15:05:06,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:06,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:06,060 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-12-14 15:05:06,060 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 15:05:06,074 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 15:05:06,087 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 15:05:06,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:06,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:06,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 40 [2022-12-14 15:05:06,183 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 15:05:06,191 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 15:05:06,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:06,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:06,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:06,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:06,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 345 treesize of output 269 [2022-12-14 15:05:06,233 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 15:05:06,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:06,255 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 34 [2022-12-14 15:05:07,012 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 15:05:07,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 9897273 treesize of output 8253295 [2022-12-14 15:05:07,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 340 treesize of output 272 [2022-12-14 15:05:07,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 8253076 treesize of output 5376288 [2022-12-14 15:05:07,244 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 15:05:07,376 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 15:05:07,392 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 15:05:07,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 93836963 treesize of output 72466133 [2022-12-14 15:05:07,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92604037 treesize of output 72466145 [2022-12-14 15:05:07,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:07,628 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:05:07,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 36 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 8664067 treesize of output 6198246 [2022-12-14 15:05:07,914 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 15:05:07,917 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 15:05:07,920 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 15:05:07,926 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-12-14 15:05:07,931 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 15:05:08,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:08,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:08,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:08,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:08,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 93836992 treesize of output 72466144 [2022-12-14 15:05:08,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:08,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:08,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:08,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:08,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:08,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:08,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:08,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:08,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:08,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:08,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:08,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:08,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:08,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:08,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:08,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 8253064 treesize of output 5787194 [2022-12-14 15:05:08,229 INFO L173 IndexEqualityManager]: detected equality via solver