./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) 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_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/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_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 503a3e49b44041609ec1bba765b53912c88abb90ff278e61e68e863904faf4bb --- 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 10:21:42,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:21:42,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:21:42,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:21:42,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:21:42,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:21:42,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:21:42,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:21:42,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:21:42,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:21:42,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:21:42,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:21:42,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:21:42,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:21:42,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:21:42,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:21:42,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:21:42,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:21:42,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:21:42,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:21:42,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:21:42,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:21:42,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:21:42,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:21:42,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:21:42,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:21:42,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:21:42,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:21:42,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:21:42,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:21:42,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:21:42,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:21:42,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:21:42,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:21:42,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:21:42,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:21:42,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:21:42,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:21:42,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:21:42,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:21:42,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:21:42,476 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2022-12-14 10:21:42,504 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:21:42,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:21:42,504 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:21:42,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:21:42,505 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:21:42,505 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:21:42,505 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:21:42,506 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:21:42,506 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:21:42,506 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:21:42,506 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:21:42,506 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:21:42,506 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:21:42,507 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:21:42,507 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:21:42,507 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:21:42,507 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:21:42,507 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:21:42,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 10:21:42,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 10:21:42,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:21:42,508 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:21:42,509 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:21:42,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:21:42,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:21:42,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:21:42,509 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 10:21:42,509 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 10:21:42,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:21:42,510 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:21:42,510 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:21:42,510 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:21:42,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:21:42,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:21:42,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:21:42,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:21:42,511 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:21:42,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:21:42,512 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:21:42,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:21:42,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:21:42,512 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_87486308-242a-4c5f-bca4-adf4f887e760/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503a3e49b44041609ec1bba765b53912c88abb90ff278e61e68e863904faf4bb [2022-12-14 10:21:42,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:21:42,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:21:42,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:21:42,703 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:21:42,703 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:21:42,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2022-12-14 10:21:45,285 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:21:45,466 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:21:45,466 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2022-12-14 10:21:45,473 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/data/3e4c549f0/9b495ac65aa44d0794c415e4b0e1c7fd/FLAGac6110557 [2022-12-14 10:21:45,482 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/data/3e4c549f0/9b495ac65aa44d0794c415e4b0e1c7fd [2022-12-14 10:21:45,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:21:45,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:21:45,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:21:45,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:21:45,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:21:45,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:21:45" (1/1) ... [2022-12-14 10:21:45,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25bdc9cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:45, skipping insertion in model container [2022-12-14 10:21:45,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:21:45" (1/1) ... [2022-12-14 10:21:45,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:21:45,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:21:45,731 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_87486308-242a-4c5f-bca4-adf4f887e760/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2022-12-14 10:21:45,734 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_87486308-242a-4c5f-bca4-adf4f887e760/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2022-12-14 10:21:45,735 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_87486308-242a-4c5f-bca4-adf4f887e760/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2022-12-14 10:21:45,736 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_87486308-242a-4c5f-bca4-adf4f887e760/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2022-12-14 10:21:45,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:21:45,747 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:21:45,780 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_87486308-242a-4c5f-bca4-adf4f887e760/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2022-12-14 10:21:45,781 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_87486308-242a-4c5f-bca4-adf4f887e760/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2022-12-14 10:21:45,782 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_87486308-242a-4c5f-bca4-adf4f887e760/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2022-12-14 10:21:45,783 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_87486308-242a-4c5f-bca4-adf4f887e760/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2022-12-14 10:21:45,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:21:45,815 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:21:45,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:45 WrapperNode [2022-12-14 10:21:45,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:21:45,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:21:45,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:21:45,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:21:45,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:45" (1/1) ... [2022-12-14 10:21:45,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:45" (1/1) ... [2022-12-14 10:21:45,857 INFO L138 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 134 [2022-12-14 10:21:45,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:21:45,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:21:45,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:21:45,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:21:45,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:45" (1/1) ... [2022-12-14 10:21:45,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:45" (1/1) ... [2022-12-14 10:21:45,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:45" (1/1) ... [2022-12-14 10:21:45,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:45" (1/1) ... [2022-12-14 10:21:45,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:45" (1/1) ... [2022-12-14 10:21:45,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:45" (1/1) ... [2022-12-14 10:21:45,877 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:45" (1/1) ... [2022-12-14 10:21:45,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:45" (1/1) ... [2022-12-14 10:21:45,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:21:45,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:21:45,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:21:45,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:21:45,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:45" (1/1) ... [2022-12-14 10:21:45,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:21:45,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:21:45,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:21:45,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:21:45,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:21:45,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:21:45,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:21:45,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:21:45,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 10:21:45,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 10:21:45,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:21:45,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:21:45,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:21:45,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:21:46,032 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:21:46,033 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:21:46,354 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:21:46,417 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:21:46,417 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-12-14 10:21:46,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:21:46 BoogieIcfgContainer [2022-12-14 10:21:46,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:21:46,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:21:46,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:21:46,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:21:46,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:21:45" (1/3) ... [2022-12-14 10:21:46,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db6a11e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:21:46, skipping insertion in model container [2022-12-14 10:21:46,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:21:45" (2/3) ... [2022-12-14 10:21:46,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db6a11e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:21:46, skipping insertion in model container [2022-12-14 10:21:46,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:21:46" (3/3) ... [2022-12-14 10:21:46,429 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2022-12-14 10:21:46,446 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:21:46,447 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2022-12-14 10:21:46,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:21:46,485 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@71bc21d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:21:46,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-12-14 10:21:46,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 56 states have (on average 2.4285714285714284) internal successors, (136), 117 states have internal predecessors, (136), 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 10:21:46,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 10:21:46,493 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:21:46,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 10:21:46,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-12-14 10:21:46,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:21:46,498 INFO L85 PathProgramCache]: Analyzing trace with hash 8374, now seen corresponding path program 1 times [2022-12-14 10:21:46,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:21:46,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689195425] [2022-12-14 10:21:46,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:21:46,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:21:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:21:46,672 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 10:21:46,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:21:46,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689195425] [2022-12-14 10:21:46,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689195425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:21:46,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:21:46,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 10:21:46,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092950267] [2022-12-14 10:21:46,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:21:46,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:21:46,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:21:46,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:21:46,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:21:46,708 INFO L87 Difference]: Start difference. First operand has 118 states, 56 states have (on average 2.4285714285714284) internal successors, (136), 117 states have internal predecessors, (136), 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 10:21:46,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:21:46,831 INFO L93 Difference]: Finished difference Result 144 states and 151 transitions. [2022-12-14 10:21:46,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:21:46,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-12-14 10:21:46,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:21:46,841 INFO L225 Difference]: With dead ends: 144 [2022-12-14 10:21:46,842 INFO L226 Difference]: Without dead ends: 143 [2022-12-14 10:21:46,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 10:21:46,846 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 102 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:21:46,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 80 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:21:46,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-12-14 10:21:46,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 119. [2022-12-14 10:21:46,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 60 states have (on average 2.1166666666666667) internal successors, (127), 118 states have internal predecessors, (127), 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 10:21:46,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2022-12-14 10:21:46,882 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 2 [2022-12-14 10:21:46,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:21:46,882 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2022-12-14 10:21:46,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 10:21:46,883 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2022-12-14 10:21:46,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 10:21:46,883 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:21:46,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 10:21:46,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:21:46,884 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-12-14 10:21:46,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:21:46,885 INFO L85 PathProgramCache]: Analyzing trace with hash 8375, now seen corresponding path program 1 times [2022-12-14 10:21:46,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:21:46,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937714275] [2022-12-14 10:21:46,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:21:46,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:21:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:21:46,951 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 10:21:46,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:21:46,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937714275] [2022-12-14 10:21:46,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937714275] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:21:46,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:21:46,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 10:21:46,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063315106] [2022-12-14 10:21:46,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:21:46,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:21:46,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:21:46,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:21:46,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:21:46,955 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 10:21:47,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:21:47,032 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2022-12-14 10:21:47,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:21:47,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-12-14 10:21:47,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:21:47,034 INFO L225 Difference]: With dead ends: 116 [2022-12-14 10:21:47,034 INFO L226 Difference]: Without dead ends: 116 [2022-12-14 10:21:47,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 10:21:47,036 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 113 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:21:47,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 60 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:21:47,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-12-14 10:21:47,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-12-14 10:21:47,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 60 states have (on average 2.05) internal successors, (123), 115 states have internal predecessors, (123), 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 10:21:47,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 123 transitions. [2022-12-14 10:21:47,047 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 123 transitions. Word has length 2 [2022-12-14 10:21:47,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:21:47,048 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 123 transitions. [2022-12-14 10:21:47,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 10:21:47,048 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 123 transitions. [2022-12-14 10:21:47,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 10:21:47,048 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:21:47,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 10:21:47,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:21:47,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-12-14 10:21:47,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:21:47,049 INFO L85 PathProgramCache]: Analyzing trace with hash 8054028, now seen corresponding path program 1 times [2022-12-14 10:21:47,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:21:47,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644964793] [2022-12-14 10:21:47,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:21:47,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:21:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:21:47,123 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 10:21:47,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:21:47,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644964793] [2022-12-14 10:21:47,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644964793] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:21:47,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:21:47,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:21:47,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636507181] [2022-12-14 10:21:47,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:21:47,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:21:47,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:21:47,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:21:47,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:21:47,126 INFO L87 Difference]: Start difference. First operand 116 states and 123 transitions. Second operand has 3 states, 2 states have (on average 2.0) 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 10:21:47,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:21:47,199 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2022-12-14 10:21:47,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:21:47,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) 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 10:21:47,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:21:47,200 INFO L225 Difference]: With dead ends: 113 [2022-12-14 10:21:47,200 INFO L226 Difference]: Without dead ends: 113 [2022-12-14 10:21:47,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 10:21:47,201 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 91 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:21:47,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 66 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:21:47,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-12-14 10:21:47,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2022-12-14 10:21:47,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 61 states have (on average 1.9508196721311475) internal successors, (119), 110 states have internal predecessors, (119), 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 10:21:47,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 119 transitions. [2022-12-14 10:21:47,205 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 119 transitions. Word has length 4 [2022-12-14 10:21:47,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:21:47,205 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 119 transitions. [2022-12-14 10:21:47,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) 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 10:21:47,205 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 119 transitions. [2022-12-14 10:21:47,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 10:21:47,205 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:21:47,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 10:21:47,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:21:47,206 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-12-14 10:21:47,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:21:47,206 INFO L85 PathProgramCache]: Analyzing trace with hash 8054029, now seen corresponding path program 1 times [2022-12-14 10:21:47,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:21:47,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335310544] [2022-12-14 10:21:47,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:21:47,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:21:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:21:47,298 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 10:21:47,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:21:47,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335310544] [2022-12-14 10:21:47,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335310544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:21:47,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:21:47,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:21:47,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681169693] [2022-12-14 10:21:47,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:21:47,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:21:47,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:21:47,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:21:47,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:21:47,300 INFO L87 Difference]: Start difference. First operand 111 states and 119 transitions. Second operand has 3 states, 2 states have (on average 2.0) 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 10:21:47,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:21:47,379 INFO L93 Difference]: Finished difference Result 126 states and 132 transitions. [2022-12-14 10:21:47,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:21:47,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) 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 10:21:47,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:21:47,380 INFO L225 Difference]: With dead ends: 126 [2022-12-14 10:21:47,380 INFO L226 Difference]: Without dead ends: 126 [2022-12-14 10:21:47,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 10:21:47,381 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 89 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:21:47,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 74 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:21:47,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-12-14 10:21:47,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 114. [2022-12-14 10:21:47,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 66 states have (on average 1.8484848484848484) internal successors, (122), 113 states have internal predecessors, (122), 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 10:21:47,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2022-12-14 10:21:47,385 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 4 [2022-12-14 10:21:47,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:21:47,385 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2022-12-14 10:21:47,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) 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 10:21:47,385 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2022-12-14 10:21:47,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:21:47,385 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:21:47,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:21:47,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 10:21:47,386 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-12-14 10:21:47,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:21:47,386 INFO L85 PathProgramCache]: Analyzing trace with hash -812908213, now seen corresponding path program 1 times [2022-12-14 10:21:47,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:21:47,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903013167] [2022-12-14 10:21:47,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:21:47,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:21:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:21:47,483 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 10:21:47,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:21:47,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903013167] [2022-12-14 10:21:47,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903013167] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:21:47,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:21:47,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:21:47,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866956806] [2022-12-14 10:21:47,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:21:47,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:21:47,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:21:47,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:21:47,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:21:47,485 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:21:47,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:21:47,581 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2022-12-14 10:21:47,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:21:47,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 10:21:47,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:21:47,583 INFO L225 Difference]: With dead ends: 116 [2022-12-14 10:21:47,583 INFO L226 Difference]: Without dead ends: 116 [2022-12-14 10:21:47,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 10:21:47,584 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 139 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:21:47,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 59 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:21:47,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-12-14 10:21:47,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 105. [2022-12-14 10:21:47,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 68 states have (on average 1.6911764705882353) internal successors, (115), 104 states have internal predecessors, (115), 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 10:21:47,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 115 transitions. [2022-12-14 10:21:47,588 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 115 transitions. Word has length 8 [2022-12-14 10:21:47,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:21:47,588 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 115 transitions. [2022-12-14 10:21:47,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:21:47,588 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 115 transitions. [2022-12-14 10:21:47,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:21:47,588 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:21:47,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:21:47,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 10:21:47,589 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-12-14 10:21:47,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:21:47,589 INFO L85 PathProgramCache]: Analyzing trace with hash -812908212, now seen corresponding path program 1 times [2022-12-14 10:21:47,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:21:47,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333346429] [2022-12-14 10:21:47,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:21:47,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:21:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:21:47,698 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 10:21:47,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:21:47,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333346429] [2022-12-14 10:21:47,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333346429] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:21:47,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:21:47,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:21:47,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590369738] [2022-12-14 10:21:47,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:21:47,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:21:47,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:21:47,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:21:47,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:21:47,700 INFO L87 Difference]: Start difference. First operand 105 states and 115 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:21:47,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:21:47,834 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2022-12-14 10:21:47,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:21:47,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 10:21:47,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:21:47,836 INFO L225 Difference]: With dead ends: 135 [2022-12-14 10:21:47,836 INFO L226 Difference]: Without dead ends: 135 [2022-12-14 10:21:47,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 10:21:47,837 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 127 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:21:47,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 82 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:21:47,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-12-14 10:21:47,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 111. [2022-12-14 10:21:47,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 75 states have (on average 1.6266666666666667) internal successors, (122), 110 states have internal predecessors, (122), 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 10:21:47,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2022-12-14 10:21:47,845 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 8 [2022-12-14 10:21:47,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:21:47,845 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2022-12-14 10:21:47,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:21:47,845 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2022-12-14 10:21:47,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 10:21:47,846 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:21:47,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:21:47,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 10:21:47,846 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-12-14 10:21:47,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:21:47,847 INFO L85 PathProgramCache]: Analyzing trace with hash 479237399, now seen corresponding path program 1 times [2022-12-14 10:21:47,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:21:47,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205598823] [2022-12-14 10:21:47,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:21:47,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:21:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:21:47,907 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 10:21:47,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:21:47,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205598823] [2022-12-14 10:21:47,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205598823] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:21:47,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:21:47,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:21:47,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410394779] [2022-12-14 10:21:47,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:21:47,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:21:47,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:21:47,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:21:47,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:21:47,908 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 10:21:48,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:21:48,031 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2022-12-14 10:21:48,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:21:48,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2022-12-14 10:21:48,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:21:48,033 INFO L225 Difference]: With dead ends: 144 [2022-12-14 10:21:48,033 INFO L226 Difference]: Without dead ends: 144 [2022-12-14 10:21:48,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:21:48,034 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 200 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:21:48,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 105 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:21:48,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-12-14 10:21:48,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 112. [2022-12-14 10:21:48,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 77 states have (on average 1.5974025974025974) internal successors, (123), 111 states have internal predecessors, (123), 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 10:21:48,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2022-12-14 10:21:48,041 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 10 [2022-12-14 10:21:48,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:21:48,041 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2022-12-14 10:21:48,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 10:21:48,041 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2022-12-14 10:21:48,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 10:21:48,042 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:21:48,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:21:48,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 10:21:48,042 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-12-14 10:21:48,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:21:48,043 INFO L85 PathProgramCache]: Analyzing trace with hash 479463659, now seen corresponding path program 1 times [2022-12-14 10:21:48,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:21:48,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155970112] [2022-12-14 10:21:48,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:21:48,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:21:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:21:48,141 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 10:21:48,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:21:48,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155970112] [2022-12-14 10:21:48,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155970112] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:21:48,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:21:48,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:21:48,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650841987] [2022-12-14 10:21:48,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:21:48,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:21:48,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:21:48,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:21:48,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:21:48,143 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 10:21:48,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:21:48,251 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2022-12-14 10:21:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:21:48,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2022-12-14 10:21:48,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:21:48,252 INFO L225 Difference]: With dead ends: 111 [2022-12-14 10:21:48,252 INFO L226 Difference]: Without dead ends: 111 [2022-12-14 10:21:48,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:21:48,253 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 37 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:21:48,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 158 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:21:48,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-12-14 10:21:48,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-12-14 10:21:48,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 77 states have (on average 1.5844155844155845) internal successors, (122), 110 states have internal predecessors, (122), 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 10:21:48,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2022-12-14 10:21:48,257 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 10 [2022-12-14 10:21:48,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:21:48,258 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2022-12-14 10:21:48,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 10:21:48,258 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2022-12-14 10:21:48,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 10:21:48,258 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:21:48,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:21:48,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 10:21:48,259 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-12-14 10:21:48,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:21:48,259 INFO L85 PathProgramCache]: Analyzing trace with hash 479463660, now seen corresponding path program 1 times [2022-12-14 10:21:48,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:21:48,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595349923] [2022-12-14 10:21:48,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:21:48,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:21:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:21:48,428 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 10:21:48,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:21:48,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595349923] [2022-12-14 10:21:48,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595349923] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:21:48,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:21:48,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:21:48,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985955596] [2022-12-14 10:21:48,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:21:48,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:21:48,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:21:48,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:21:48,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:21:48,429 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 10:21:48,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:21:48,555 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2022-12-14 10:21:48,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:21:48,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2022-12-14 10:21:48,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:21:48,556 INFO L225 Difference]: With dead ends: 111 [2022-12-14 10:21:48,556 INFO L226 Difference]: Without dead ends: 111 [2022-12-14 10:21:48,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:21:48,556 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 10 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:21:48,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 199 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:21:48,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-12-14 10:21:48,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 106. [2022-12-14 10:21:48,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 77 states have (on average 1.5194805194805194) internal successors, (117), 105 states have internal predecessors, (117), 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 10:21:48,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2022-12-14 10:21:48,560 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 10 [2022-12-14 10:21:48,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:21:48,560 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2022-12-14 10:21:48,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 10:21:48,560 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2022-12-14 10:21:48,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 10:21:48,560 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:21:48,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:21:48,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 10:21:48,561 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-12-14 10:21:48,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:21:48,561 INFO L85 PathProgramCache]: Analyzing trace with hash 494053857, now seen corresponding path program 1 times [2022-12-14 10:21:48,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:21:48,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126390725] [2022-12-14 10:21:48,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:21:48,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:21:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:21:48,711 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 10:21:48,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:21:48,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126390725] [2022-12-14 10:21:48,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126390725] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:21:48,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:21:48,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 10:21:48,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235719906] [2022-12-14 10:21:48,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:21:48,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:21:48,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:21:48,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:21:48,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:21:48,713 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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 10:21:48,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:21:48,890 INFO L93 Difference]: Finished difference Result 158 states and 174 transitions. [2022-12-14 10:21:48,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:21:48,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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 13 [2022-12-14 10:21:48,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:21:48,891 INFO L225 Difference]: With dead ends: 158 [2022-12-14 10:21:48,891 INFO L226 Difference]: Without dead ends: 158 [2022-12-14 10:21:48,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 10:21:48,892 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 220 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:21:48,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 156 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:21:48,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-12-14 10:21:48,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 113. [2022-12-14 10:21:48,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 84 states have (on average 1.4880952380952381) internal successors, (125), 112 states have internal predecessors, (125), 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 10:21:48,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2022-12-14 10:21:48,896 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 13 [2022-12-14 10:21:48,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:21:48,896 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2022-12-14 10:21:48,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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 10:21:48,896 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2022-12-14 10:21:48,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 10:21:48,897 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:21:48,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:21:48,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 10:21:48,897 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-12-14 10:21:48,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:21:48,898 INFO L85 PathProgramCache]: Analyzing trace with hash 947851196, now seen corresponding path program 1 times [2022-12-14 10:21:48,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:21:48,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071107461] [2022-12-14 10:21:48,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:21:48,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:21:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:21:48,975 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 10:21:48,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:21:48,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071107461] [2022-12-14 10:21:48,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071107461] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:21:48,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:21:48,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:21:48,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844042536] [2022-12-14 10:21:48,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:21:48,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:21:48,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:21:48,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:21:48,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:21:48,977 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 10:21:49,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:21:49,070 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2022-12-14 10:21:49,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:21:49,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-12-14 10:21:49,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:21:49,071 INFO L225 Difference]: With dead ends: 112 [2022-12-14 10:21:49,071 INFO L226 Difference]: Without dead ends: 112 [2022-12-14 10:21:49,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:21:49,072 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 31 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:21:49,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 154 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:21:49,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-12-14 10:21:49,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-12-14 10:21:49,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 84 states have (on average 1.4761904761904763) internal successors, (124), 111 states have internal predecessors, (124), 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 10:21:49,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2022-12-14 10:21:49,075 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 15 [2022-12-14 10:21:49,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:21:49,075 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2022-12-14 10:21:49,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 10:21:49,076 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2022-12-14 10:21:49,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 10:21:49,076 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:21:49,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:21:49,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 10:21:49,076 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-12-14 10:21:49,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:21:49,077 INFO L85 PathProgramCache]: Analyzing trace with hash 947851197, now seen corresponding path program 1 times [2022-12-14 10:21:49,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:21:49,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451455069] [2022-12-14 10:21:49,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:21:49,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:21:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:21:49,248 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 10:21:49,248 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:21:49,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451455069] [2022-12-14 10:21:49,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451455069] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:21:49,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:21:49,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:21:49,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079989241] [2022-12-14 10:21:49,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:21:49,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:21:49,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:21:49,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:21:49,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:21:49,250 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 10:21:49,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:21:49,346 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2022-12-14 10:21:49,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:21:49,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-12-14 10:21:49,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:21:49,347 INFO L225 Difference]: With dead ends: 109 [2022-12-14 10:21:49,347 INFO L226 Difference]: Without dead ends: 109 [2022-12-14 10:21:49,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:21:49,348 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 5 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:21:49,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 196 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:21:49,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-12-14 10:21:49,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2022-12-14 10:21:49,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 80 states have (on average 1.4375) internal successors, (115), 103 states have internal predecessors, (115), 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 10:21:49,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2022-12-14 10:21:49,352 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 15 [2022-12-14 10:21:49,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:21:49,352 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2022-12-14 10:21:49,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 10:21:49,352 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2022-12-14 10:21:49,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 10:21:49,353 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:21:49,353 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:21:49,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 10:21:49,353 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-12-14 10:21:49,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:21:49,354 INFO L85 PathProgramCache]: Analyzing trace with hash 405330386, now seen corresponding path program 1 times [2022-12-14 10:21:49,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:21:49,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561152807] [2022-12-14 10:21:49,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:21:49,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:21:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:21:49,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:21:49,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:21:49,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561152807] [2022-12-14 10:21:49,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561152807] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:21:49,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372429799] [2022-12-14 10:21:49,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:21:49,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:21:49,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:21:49,480 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:21:49,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:21:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:21:49,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 10:21:49,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:21:49,629 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 11 treesize of output 7 [2022-12-14 10:21:49,634 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 11 treesize of output 7 [2022-12-14 10:21:49,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:49,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-12-14 10:21:49,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:49,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-12-14 10:21:49,809 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 10:21:49,815 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 10:21:49,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:21:49,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:21:49,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:21:49,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372429799] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:21:49,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [421388449] [2022-12-14 10:21:49,906 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 10:21:49,906 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:21:49,909 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:21:49,913 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:21:49,913 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:21:49,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:49,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:49,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 10:21:49,964 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 19 treesize of output 1 [2022-12-14 10:21:49,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:49,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 10:21:49,981 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 19 treesize of output 1 [2022-12-14 10:21:49,997 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 11 treesize of output 7 [2022-12-14 10:21:50,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:50,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:50,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:50,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:50,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:50,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-12-14 10:21:50,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:50,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:50,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-12-14 10:21:50,032 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 11 treesize of output 7 [2022-12-14 10:21:50,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:50,062 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 19 treesize of output 18 [2022-12-14 10:21:50,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:50,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:50,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:50,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-12-14 10:21:50,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:50,087 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 19 treesize of output 18 [2022-12-14 10:21:50,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:50,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:50,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:50,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-12-14 10:21:50,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:50,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:50,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 10:21:50,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:50,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:50,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 10:21:50,359 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:21:51,513 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3147#(and (= |ULTIMATE.start_main_~null~0#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_main_~end~0#1.base|) 1)) (or (not (= |ULTIMATE.start_main_~null~0#1.offset| |ULTIMATE.start_main_~end~0#1.offset|)) (not (= |ULTIMATE.start_main_~null~0#1.base| |ULTIMATE.start_main_~end~0#1.base|))) (= |ULTIMATE.start_main_~list~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 10:21:51,513 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:21:51,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:21:51,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 10 [2022-12-14 10:21:51,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955479114] [2022-12-14 10:21:51,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:21:51,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 10:21:51,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:21:51,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 10:21:51,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-12-14 10:21:51,515 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 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 10:21:51,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:21:51,771 INFO L93 Difference]: Finished difference Result 165 states and 181 transitions. [2022-12-14 10:21:51,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 10:21:51,772 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 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 19 [2022-12-14 10:21:51,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:21:51,772 INFO L225 Difference]: With dead ends: 165 [2022-12-14 10:21:51,772 INFO L226 Difference]: Without dead ends: 165 [2022-12-14 10:21:51,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2022-12-14 10:21:51,773 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 307 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:21:51,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 144 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:21:51,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-12-14 10:21:51,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 131. [2022-12-14 10:21:51,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 107 states have (on average 1.439252336448598) internal successors, (154), 130 states have internal predecessors, (154), 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 10:21:51,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 154 transitions. [2022-12-14 10:21:51,778 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 154 transitions. Word has length 19 [2022-12-14 10:21:51,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:21:51,779 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 154 transitions. [2022-12-14 10:21:51,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 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 10:21:51,779 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 154 transitions. [2022-12-14 10:21:51,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 10:21:51,780 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:21:51,780 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 10:21:51,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:21:51,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 10:21:51,981 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-12-14 10:21:51,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:21:51,981 INFO L85 PathProgramCache]: Analyzing trace with hash 404025859, now seen corresponding path program 1 times [2022-12-14 10:21:51,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:21:51,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446728854] [2022-12-14 10:21:51,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:21:51,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:21:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:21:52,085 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 10:21:52,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:21:52,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446728854] [2022-12-14 10:21:52,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446728854] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:21:52,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:21:52,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:21:52,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029788867] [2022-12-14 10:21:52,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:21:52,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:21:52,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:21:52,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:21:52,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:21:52,087 INFO L87 Difference]: Start difference. First operand 131 states and 154 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 10:21:52,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:21:52,179 INFO L93 Difference]: Finished difference Result 128 states and 149 transitions. [2022-12-14 10:21:52,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:21:52,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2022-12-14 10:21:52,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:21:52,180 INFO L225 Difference]: With dead ends: 128 [2022-12-14 10:21:52,180 INFO L226 Difference]: Without dead ends: 128 [2022-12-14 10:21:52,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:21:52,180 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 5 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:21:52,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 189 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:21:52,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-12-14 10:21:52,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2022-12-14 10:21:52,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 104 states have (on average 1.4326923076923077) internal successors, (149), 127 states have internal predecessors, (149), 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 10:21:52,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2022-12-14 10:21:52,183 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 19 [2022-12-14 10:21:52,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:21:52,183 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2022-12-14 10:21:52,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 10:21:52,183 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2022-12-14 10:21:52,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 10:21:52,184 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:21:52,184 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:21:52,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 10:21:52,184 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-12-14 10:21:52,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:21:52,184 INFO L85 PathProgramCache]: Analyzing trace with hash -360214418, now seen corresponding path program 1 times [2022-12-14 10:21:52,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:21:52,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959497593] [2022-12-14 10:21:52,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:21:52,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:21:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:21:52,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:21:52,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:21:52,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959497593] [2022-12-14 10:21:52,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959497593] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:21:52,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132459953] [2022-12-14 10:21:52,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:21:52,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:21:52,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:21:52,578 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:21:52,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:21:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:21:52,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-14 10:21:52,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:21:52,664 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 10:21:52,684 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 13 treesize of output 9 [2022-12-14 10:21:52,723 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 10:21:52,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 10:21:52,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:52,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-12-14 10:21:52,766 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 11 treesize of output 7 [2022-12-14 10:21:52,797 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 16 treesize of output 8 [2022-12-14 10:21:52,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 18 [2022-12-14 10:21:52,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 18 [2022-12-14 10:21:52,893 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 10:21:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:21:52,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:21:52,924 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_533 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_533) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) is different from false [2022-12-14 10:21:52,937 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_533 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_533) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) is different from false [2022-12-14 10:21:53,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:21:53,047 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:21:53,047 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 31 [2022-12-14 10:21:53,053 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 36 treesize of output 24 [2022-12-14 10:21:53,056 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 7 treesize of output 3 [2022-12-14 10:21:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:21:53,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132459953] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:21:53,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [390936964] [2022-12-14 10:21:53,078 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-12-14 10:21:53,078 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:21:53,078 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:21:53,078 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:21:53,078 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:21:53,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 10:21:53,110 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 19 treesize of output 1 [2022-12-14 10:21:53,116 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 19 treesize of output 1 [2022-12-14 10:21:53,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 10:21:53,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-12-14 10:21:53,153 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 11 treesize of output 7 [2022-12-14 10:21:53,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-12-14 10:21:53,172 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 11 treesize of output 7 [2022-12-14 10:21:53,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-12-14 10:21:53,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,205 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 19 treesize of output 18 [2022-12-14 10:21:53,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,215 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 19 treesize of output 18 [2022-12-14 10:21:53,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 10:21:53,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 10:21:53,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-12-14 10:21:53,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2022-12-14 10:21:53,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 10:21:53,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 10:21:53,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-12-14 10:21:53,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,413 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-12-14 10:21:53,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31 [2022-12-14 10:21:53,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-12-14 10:21:53,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,468 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-12-14 10:21:53,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 63 [2022-12-14 10:21:53,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:21:53,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:21:53,540 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 10:21:53,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-12-14 10:21:53,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,559 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-12-14 10:21:53,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 66 [2022-12-14 10:21:53,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-12-14 10:21:53,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 61 [2022-12-14 10:21:53,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:21:53,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:21:53,752 INFO L321 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2022-12-14 10:21:53,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 461 treesize of output 463 [2022-12-14 10:21:53,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:21:53,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:53,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:21:53,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:21:53,801 INFO L321 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-12-14 10:21:53,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 493 treesize of output 473 [2022-12-14 10:21:53,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:21:53,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:21:53,859 INFO L321 Elim1Store]: treesize reduction 53, result has 25.4 percent of original size [2022-12-14 10:21:53,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 489 treesize of output 482 [2022-12-14 10:21:54,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:21:54,353 INFO L321 Elim1Store]: treesize reduction 192, result has 17.6 percent of original size [2022-12-14 10:21:54,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 982 treesize of output 809 [2022-12-14 10:21:54,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:21:54,452 INFO L321 Elim1Store]: treesize reduction 172, result has 19.2 percent of original size [2022-12-14 10:21:54,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 933 treesize of output 848 [2022-12-14 10:21:54,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:54,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:54,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:54,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:54,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:21:54,568 INFO L321 Elim1Store]: treesize reduction 402, result has 12.4 percent of original size [2022-12-14 10:21:54,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 890 treesize of output 847 [2022-12-14 10:21:55,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:55,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:55,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:21:55,447 INFO L321 Elim1Store]: treesize reduction 232, result has 6.1 percent of original size [2022-12-14 10:21:55,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 1860 treesize of output 1531 [2022-12-14 10:21:55,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:55,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:55,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:55,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:55,559 INFO L321 Elim1Store]: treesize reduction 234, result has 17.0 percent of original size [2022-12-14 10:21:55,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 1203 treesize of output 1136 [2022-12-14 10:21:55,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:55,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:55,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:21:55,627 INFO L321 Elim1Store]: treesize reduction 127, result has 8.0 percent of original size [2022-12-14 10:21:55,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 1213 treesize of output 1105 [2022-12-14 10:21:56,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:56,566 INFO L321 Elim1Store]: treesize reduction 388, result has 10.8 percent of original size [2022-12-14 10:21:56,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 2104 treesize of output 1970 [2022-12-14 10:21:56,803 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 10:21:56,806 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 11 treesize of output 7 [2022-12-14 10:21:56,810 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 11 treesize of output 7 [2022-12-14 10:21:56,841 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-14 10:21:56,841 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 1 case distinctions, treesize of input 19 treesize of output 26 [2022-12-14 10:21:56,856 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 10:21:56,856 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 1 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 10:21:56,872 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 10:21:56,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:56,912 INFO L321 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2022-12-14 10:21:56,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 62 [2022-12-14 10:21:56,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:21:56,934 INFO L321 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2022-12-14 10:21:56,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 54 [2022-12-14 10:21:56,947 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 13 treesize of output 9 [2022-12-14 10:21:56,972 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:21:56,972 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-14 10:21:56,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 10:21:56,985 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 10:21:56,988 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 11 treesize of output 7 [2022-12-14 10:21:56,992 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 11 treesize of output 7 [2022-12-14 10:21:57,005 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 10:21:57,021 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 10:21:57,021 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 1 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 10:21:57,040 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-14 10:21:57,041 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 1 case distinctions, treesize of input 19 treesize of output 26 [2022-12-14 10:21:57,072 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 13 treesize of output 9 [2022-12-14 10:21:57,094 INFO L321 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2022-12-14 10:21:57,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 65 [2022-12-14 10:21:57,120 INFO L321 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2022-12-14 10:21:57,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 61 [2022-12-14 10:21:57,285 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:21:58,662 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3865#(and (<= (+ 8 |ULTIMATE.start_main_~end~0#1.offset|) (select |#length| |ULTIMATE.start_main_~end~0#1.base|)) (not (= |ULTIMATE.start_main_~null~0#1.base| |ULTIMATE.start_main_~end~0#1.base|)) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~null~0#1.offset|) (<= 0 |ULTIMATE.start_main_~list~0#1.offset|) (= (select |#valid| |ULTIMATE.start_main_~end~0#1.base|) 1) (= |ULTIMATE.start_main_~end~0#1.base| |ULTIMATE.start_main_~list~0#1.base|) (= |ULTIMATE.start_main_~list~0#1.offset| |ULTIMATE.start_main_~end~0#1.offset|) (<= |ULTIMATE.start_main_~list~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~null~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (not (= ~unnamed1~0~BLACK (select (select |#memory_int| |ULTIMATE.start_main_~end~0#1.base|) (+ 4 |ULTIMATE.start_main_~end~0#1.offset|)))) (= |#NULL.base| 0))' at error location [2022-12-14 10:21:58,663 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:21:58,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:21:58,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 26 [2022-12-14 10:21:58,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460648533] [2022-12-14 10:21:58,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:21:58,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-14 10:21:58,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:21:58,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-14 10:21:58,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1294, Unknown=5, NotChecked=150, Total=1640 [2022-12-14 10:21:58,665 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 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 10:21:59,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:21:59,626 INFO L93 Difference]: Finished difference Result 192 states and 217 transitions. [2022-12-14 10:21:59,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 10:21:59,626 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-14 10:21:59,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:21:59,627 INFO L225 Difference]: With dead ends: 192 [2022-12-14 10:21:59,627 INFO L226 Difference]: Without dead ends: 192 [2022-12-14 10:21:59,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=428, Invalid=2227, Unknown=5, NotChecked=202, Total=2862 [2022-12-14 10:21:59,628 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 592 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 63 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 296 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:21:59,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 360 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 858 Invalid, 1 Unknown, 296 Unchecked, 0.5s Time] [2022-12-14 10:21:59,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-12-14 10:21:59,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 140. [2022-12-14 10:21:59,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 116 states have (on average 1.4051724137931034) internal successors, (163), 139 states have internal predecessors, (163), 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 10:21:59,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 163 transitions. [2022-12-14 10:21:59,631 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 163 transitions. Word has length 20 [2022-12-14 10:21:59,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:21:59,632 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 163 transitions. [2022-12-14 10:21:59,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 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 10:21:59,632 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 163 transitions. [2022-12-14 10:21:59,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 10:21:59,632 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:21:59,633 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 10:21:59,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 10:21:59,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 10:21:59,834 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-12-14 10:21:59,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:21:59,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1695487611, now seen corresponding path program 1 times [2022-12-14 10:21:59,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:21:59,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312808278] [2022-12-14 10:21:59,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:21:59,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:21:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:21:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:21:59,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:21:59,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312808278] [2022-12-14 10:21:59,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312808278] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:21:59,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:21:59,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:21:59,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707921844] [2022-12-14 10:21:59,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:21:59,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:21:59,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:21:59,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:21:59,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:21:59,890 INFO L87 Difference]: Start difference. First operand 140 states and 163 transitions. Second operand has 3 states, 2 states have (on average 12.0) 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 10:21:59,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:21:59,935 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2022-12-14 10:21:59,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:21:59,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) 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 10:21:59,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:21:59,936 INFO L225 Difference]: With dead ends: 142 [2022-12-14 10:21:59,936 INFO L226 Difference]: Without dead ends: 142 [2022-12-14 10:21:59,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 10:21:59,937 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 39 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:21:59,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 73 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:21:59,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-12-14 10:21:59,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2022-12-14 10:21:59,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 118 states have (on average 1.3728813559322033) internal successors, (162), 141 states have internal predecessors, (162), 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 10:21:59,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2022-12-14 10:21:59,940 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 24 [2022-12-14 10:21:59,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:21:59,940 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2022-12-14 10:21:59,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) 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 10:21:59,941 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2022-12-14 10:21:59,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 10:21:59,941 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:21:59,942 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:21:59,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 10:21:59,942 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-12-14 10:21:59,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:21:59,942 INFO L85 PathProgramCache]: Analyzing trace with hash -2088284808, now seen corresponding path program 1 times [2022-12-14 10:21:59,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:21:59,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498657204] [2022-12-14 10:21:59,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:21:59,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:21:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:22:00,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:00,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:22:00,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498657204] [2022-12-14 10:22:00,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498657204] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:22:00,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326864043] [2022-12-14 10:22:00,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:22:00,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:22:00,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:22:00,471 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:22:00,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87486308-242a-4c5f-bca4-adf4f887e760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:22:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:22:00,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-14 10:22:00,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:22:00,563 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 10:22:00,580 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 13 treesize of output 9 [2022-12-14 10:22:00,621 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 10:22:00,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 10:22:00,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:00,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-12-14 10:22:00,653 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 11 treesize of output 7 [2022-12-14 10:22:00,676 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 16 treesize of output 8 [2022-12-14 10:22:00,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 18 [2022-12-14 10:22:00,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 18 [2022-12-14 10:22:00,722 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 10:22:00,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 10:22:00,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 10:22:00,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-14 10:22:00,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-12-14 10:22:00,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 18 [2022-12-14 10:22:00,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 18 [2022-12-14 10:22:00,839 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 10:22:00,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:00,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:22:00,917 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_711 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_711) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) is different from false [2022-12-14 10:22:01,039 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-14 10:22:01,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-12-14 10:22:01,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:22:01,189 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:22:01,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2022-12-14 10:22:01,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:22:01,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-12-14 10:22:01,199 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 7 treesize of output 3 [2022-12-14 10:22:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:22:01,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326864043] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:22:01,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [236090699] [2022-12-14 10:22:01,227 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-12-14 10:22:01,227 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:22:01,227 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:22:01,227 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:22:01,227 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:22:01,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 10:22:01,264 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 19 treesize of output 1 [2022-12-14 10:22:01,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 10:22:01,277 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 19 treesize of output 1 [2022-12-14 10:22:01,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-12-14 10:22:01,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-12-14 10:22:01,307 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 11 treesize of output 7 [2022-12-14 10:22:01,314 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 11 treesize of output 7 [2022-12-14 10:22:01,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,328 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 19 treesize of output 18 [2022-12-14 10:22:01,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,336 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 19 treesize of output 18 [2022-12-14 10:22:01,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-12-14 10:22:01,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 10:22:01,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-12-14 10:22:01,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-12-14 10:22:01,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2022-12-14 10:22:01,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 10:22:01,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-12-14 10:22:01,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 10:22:01,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,543 INFO L321 Elim1Store]: treesize reduction 48, result has 44.8 percent of original size [2022-12-14 10:22:01,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 65 [2022-12-14 10:22:01,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,580 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-12-14 10:22:01,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 63 [2022-12-14 10:22:01,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-12-14 10:22:01,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,626 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-12-14 10:22:01,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 31 [2022-12-14 10:22:01,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:22:01,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:22:01,660 INFO L321 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2022-12-14 10:22:01,660 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 2 case distinctions, treesize of input 66 treesize of output 82 [2022-12-14 10:22:01,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,688 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-12-14 10:22:01,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 153 treesize of output 111 [2022-12-14 10:22:01,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 56 [2022-12-14 10:22:01,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 65 [2022-12-14 10:22:01,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-12-14 10:22:01,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-12-14 10:22:01,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,864 INFO L321 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2022-12-14 10:22:01,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 252 treesize of output 168 [2022-12-14 10:22:01,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 75 [2022-12-14 10:22:01,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-12-14 10:22:01,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,969 INFO L321 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-12-14 10:22:01,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 256 treesize of output 164 [2022-12-14 10:22:01,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:01,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 84 [2022-12-14 10:22:02,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-12-14 10:22:02,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 26 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 71 [2022-12-14 10:22:02,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,210 INFO L321 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2022-12-14 10:22:02,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 333 treesize of output 213 [2022-12-14 10:22:02,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 45 [2022-12-14 10:22:02,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 87 [2022-12-14 10:22:02,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,401 INFO L321 Elim1Store]: treesize reduction 136, result has 17.6 percent of original size [2022-12-14 10:22:02,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 431 treesize of output 241 [2022-12-14 10:22:02,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 93 [2022-12-14 10:22:02,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2022-12-14 10:22:02,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:22:02,550 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-12-14 10:22:02,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 436 treesize of output 270 [2022-12-14 10:22:02,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 102 [2022-12-14 10:22:02,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 34 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 79 [2022-12-14 10:22:02,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 66 [2022-12-14 10:22:02,764 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 10:22:02,766 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 11 treesize of output 7 [2022-12-14 10:22:02,769 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 11 treesize of output 7 [2022-12-14 10:22:02,777 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 10:22:02,790 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 10:22:02,790 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 1 case distinctions, treesize of input 26 treesize of output 21 [2022-12-14 10:22:02,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:22:02,806 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 10:22:02,806 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 1 case distinctions, treesize of input 19 treesize of output 22 [2022-12-14 10:22:02,828 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 13 treesize of output 9 [2022-12-14 10:22:02,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,850 INFO L321 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2022-12-14 10:22:02,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 79 [2022-12-14 10:22:02,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:02,886 INFO L321 Elim1Store]: treesize reduction 76, result has 29.0 percent of original size [2022-12-14 10:22:02,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 84 [2022-12-14 10:22:02,975 INFO L321 Elim1Store]: treesize reduction 36, result has 42.9 percent of original size [2022-12-14 10:22:02,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 72 treesize of output 91 [2022-12-14 10:22:02,995 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 10:22:02,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 74 [2022-12-14 10:22:03,082 INFO L321 Elim1Store]: treesize reduction 16, result has 63.6 percent of original size [2022-12-14 10:22:03,083 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 2 case distinctions, treesize of input 78 treesize of output 93 [2022-12-14 10:22:03,111 INFO L321 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2022-12-14 10:22:03,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 76 [2022-12-14 10:22:03,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:22:03,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 13 [2022-12-14 10:22:03,521 INFO L321 Elim1Store]: treesize reduction 216, result has 58.6 percent of original size [2022-12-14 10:22:03,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 535 treesize of output 776 [2022-12-14 10:22:03,842 INFO L321 Elim1Store]: treesize reduction 112, result has 67.3 percent of original size [2022-12-14 10:22:03,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 641 treesize of output 621 [2022-12-14 10:22:03,920 INFO L321 Elim1Store]: treesize reduction 160, result has 15.3 percent of original size [2022-12-14 10:22:03,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 283 treesize of output 280 [2022-12-14 10:33:24,240 WARN L233 SmtUtils]: Spent 25.96s on a formula simplification that was a NOOP. DAG size: 1823 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 10:33:49,736 WARN L233 SmtUtils]: Spent 8.54s on a formula simplification that was a NOOP. DAG size: 1819 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 10:34:11,586 WARN L233 SmtUtils]: Spent 11.22s on a formula simplification that was a NOOP. DAG size: 1426 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 10:34:34,015 WARN L233 SmtUtils]: Spent 11.35s on a formula simplification that was a NOOP. DAG size: 1422 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 10:34:50,398 WARN L233 SmtUtils]: Spent 5.39s on a formula simplification that was a NOOP. DAG size: 1419 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)