./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/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_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4fb6aa6206205a747f158782e93b3c9333c1a2cdc4e8dab70046fca960e31961 --- 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 11:16:11,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:16:11,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:16:12,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:16:12,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:16:12,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:16:12,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:16:12,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:16:12,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:16:12,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:16:12,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:16:12,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:16:12,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:16:12,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:16:12,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:16:12,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:16:12,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:16:12,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:16:12,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:16:12,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:16:12,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:16:12,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:16:12,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:16:12,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:16:12,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:16:12,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:16:12,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:16:12,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:16:12,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:16:12,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:16:12,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:16:12,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:16:12,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:16:12,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:16:12,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:16:12,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:16:12,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:16:12,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:16:12,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:16:12,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:16:12,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:16:12,037 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 11:16:12,052 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:16:12,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:16:12,053 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:16:12,053 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:16:12,053 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:16:12,053 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:16:12,053 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:16:12,054 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:16:12,060 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:16:12,060 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:16:12,060 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:16:12,060 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:16:12,061 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:16:12,061 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:16:12,061 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:16:12,061 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:16:12,061 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:16:12,061 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:16:12,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 11:16:12,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 11:16:12,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:16:12,062 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:16:12,062 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 11:16:12,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:16:12,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:16:12,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:16:12,063 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 11:16:12,063 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 11:16:12,063 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 11:16:12,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:16:12,063 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 11:16:12,063 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:16:12,063 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:16:12,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:16:12,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:16:12,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:16:12,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:16:12,064 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:16:12,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:16:12,064 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:16:12,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:16:12,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:16:12,065 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_68b49599-a8d8-496a-9779-3cb1cb1de8d9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fb6aa6206205a747f158782e93b3c9333c1a2cdc4e8dab70046fca960e31961 [2022-12-14 11:16:12,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:16:12,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:16:12,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:16:12,279 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:16:12,279 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:16:12,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i [2022-12-14 11:16:14,784 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:16:14,974 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:16:14,975 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i [2022-12-14 11:16:14,983 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/data/b91289cab/3a44ee12ef5e442c9bfb8888b0f05a30/FLAGc213f0b62 [2022-12-14 11:16:15,366 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/data/b91289cab/3a44ee12ef5e442c9bfb8888b0f05a30 [2022-12-14 11:16:15,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:16:15,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:16:15,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:16:15,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:16:15,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:16:15,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:16:15" (1/1) ... [2022-12-14 11:16:15,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39356580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:15, skipping insertion in model container [2022-12-14 11:16:15,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:16:15" (1/1) ... [2022-12-14 11:16:15,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:16:15,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:16:15,594 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_68b49599-a8d8-496a-9779-3cb1cb1de8d9/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i[24211,24224] [2022-12-14 11:16:15,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:16:15,603 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:16:15,632 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_68b49599-a8d8-496a-9779-3cb1cb1de8d9/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i[24211,24224] [2022-12-14 11:16:15,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:16:15,649 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:16:15,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:15 WrapperNode [2022-12-14 11:16:15,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:16:15,651 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:16:15,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:16:15,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:16:15,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:15" (1/1) ... [2022-12-14 11:16:15,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:15" (1/1) ... [2022-12-14 11:16:15,679 INFO L138 Inliner]: procedures = 122, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 95 [2022-12-14 11:16:15,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:16:15,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:16:15,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:16:15,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:16:15,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:15" (1/1) ... [2022-12-14 11:16:15,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:15" (1/1) ... [2022-12-14 11:16:15,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:15" (1/1) ... [2022-12-14 11:16:15,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:15" (1/1) ... [2022-12-14 11:16:15,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:15" (1/1) ... [2022-12-14 11:16:15,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:15" (1/1) ... [2022-12-14 11:16:15,699 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:15" (1/1) ... [2022-12-14 11:16:15,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:15" (1/1) ... [2022-12-14 11:16:15,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:16:15,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:16:15,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:16:15,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:16:15,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:15" (1/1) ... [2022-12-14 11:16:15,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:16:15,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:16:15,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:16:15,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:16:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-12-14 11:16:15,754 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-12-14 11:16:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 11:16:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 11:16:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 11:16:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:16:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 11:16:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 11:16:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:16:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:16:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:16:15,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:16:15,835 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:16:15,837 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:16:15,855 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-12-14 11:16:16,074 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:16:16,109 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:16:16,110 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-14 11:16:16,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:16:16 BoogieIcfgContainer [2022-12-14 11:16:16,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:16:16,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:16:16,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:16:16,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:16:16,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:16:15" (1/3) ... [2022-12-14 11:16:16,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725ecd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:16:16, skipping insertion in model container [2022-12-14 11:16:16,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:16:15" (2/3) ... [2022-12-14 11:16:16,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725ecd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:16:16, skipping insertion in model container [2022-12-14 11:16:16,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:16:16" (3/3) ... [2022-12-14 11:16:16,120 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_circular_traversal-2.i [2022-12-14 11:16:16,140 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:16:16,140 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2022-12-14 11:16:16,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:16:16,193 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;@343fc2e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:16:16,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-12-14 11:16:16,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 32 states have (on average 2.375) internal successors, (76), 68 states have internal predecessors, (76), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:16:16,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 11:16:16,205 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:16,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 11:16:16,206 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-14 11:16:16,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:16,211 INFO L85 PathProgramCache]: Analyzing trace with hash 173399, now seen corresponding path program 1 times [2022-12-14 11:16:16,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:16,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174762226] [2022-12-14 11:16:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:16,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:16,436 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 11:16:16,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:16,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174762226] [2022-12-14 11:16:16,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174762226] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:16:16,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:16:16,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 11:16:16,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864266273] [2022-12-14 11:16:16,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:16:16,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:16:16,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:16,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:16:16,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:16:16,475 INFO L87 Difference]: Start difference. First operand has 70 states, 32 states have (on average 2.375) internal successors, (76), 68 states have internal predecessors, (76), 2 states have call successors, (2), 1 states have call predecessors, (2), 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 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 11:16:16,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:16,567 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2022-12-14 11:16:16,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:16:16,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-12-14 11:16:16,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:16,576 INFO L225 Difference]: With dead ends: 82 [2022-12-14 11:16:16,577 INFO L226 Difference]: Without dead ends: 77 [2022-12-14 11:16:16,578 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 11:16:16,581 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 58 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:16,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 48 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:16:16,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-14 11:16:16,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 61. [2022-12-14 11:16:16,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 60 states have internal predecessors, (64), 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 11:16:16,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2022-12-14 11:16:16,609 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 3 [2022-12-14 11:16:16,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:16,610 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2022-12-14 11:16:16,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 11:16:16,610 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2022-12-14 11:16:16,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 11:16:16,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:16,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 11:16:16,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:16:16,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-14 11:16:16,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:16,611 INFO L85 PathProgramCache]: Analyzing trace with hash 173400, now seen corresponding path program 1 times [2022-12-14 11:16:16,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:16,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379389987] [2022-12-14 11:16:16,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:16,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:16,680 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 11:16:16,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:16,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379389987] [2022-12-14 11:16:16,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379389987] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:16:16,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:16:16,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 11:16:16,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151456543] [2022-12-14 11:16:16,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:16:16,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:16:16,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:16,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:16:16,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:16:16,684 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 11:16:16,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:16,737 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2022-12-14 11:16:16,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:16:16,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-12-14 11:16:16,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:16,738 INFO L225 Difference]: With dead ends: 57 [2022-12-14 11:16:16,739 INFO L226 Difference]: Without dead ends: 57 [2022-12-14 11:16:16,739 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 11:16:16,740 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:16,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 30 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:16:16,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-14 11:16:16,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-12-14 11:16:16,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 30 states have (on average 2.0) internal successors, (60), 56 states have internal predecessors, (60), 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 11:16:16,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2022-12-14 11:16:16,744 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 3 [2022-12-14 11:16:16,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:16,745 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2022-12-14 11:16:16,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 11:16:16,745 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2022-12-14 11:16:16,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 11:16:16,746 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:16,746 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:16,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:16:16,746 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-14 11:16:16,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:16,747 INFO L85 PathProgramCache]: Analyzing trace with hash -723752623, now seen corresponding path program 1 times [2022-12-14 11:16:16,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:16,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355695383] [2022-12-14 11:16:16,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:16,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:16,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:16:16,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:16,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355695383] [2022-12-14 11:16:16,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355695383] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:16:16,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:16:16,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:16:16,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967102887] [2022-12-14 11:16:16,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:16:16,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:16:16,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:16,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:16:16,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:16:16,821 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 11:16:16,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:16,898 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2022-12-14 11:16:16,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:16:16,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 11:16:16,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:16,899 INFO L225 Difference]: With dead ends: 93 [2022-12-14 11:16:16,899 INFO L226 Difference]: Without dead ends: 93 [2022-12-14 11:16:16,900 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 11:16:16,901 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 46 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:16,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 87 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:16:16,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-12-14 11:16:16,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 55. [2022-12-14 11:16:16,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 54 states have internal predecessors, (58), 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 11:16:16,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2022-12-14 11:16:16,905 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 8 [2022-12-14 11:16:16,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:16,905 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2022-12-14 11:16:16,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 11:16:16,905 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2022-12-14 11:16:16,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 11:16:16,906 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:16,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:16,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 11:16:16,906 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-14 11:16:16,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:16,907 INFO L85 PathProgramCache]: Analyzing trace with hash -723752622, now seen corresponding path program 1 times [2022-12-14 11:16:16,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:16,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4909703] [2022-12-14 11:16:16,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:16,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:16,988 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 11:16:16,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:16,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4909703] [2022-12-14 11:16:16,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4909703] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:16:16,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:16:16,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:16:16,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894783606] [2022-12-14 11:16:16,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:16:16,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:16:16,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:16,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:16:16,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:16:16,991 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 11:16:17,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:17,057 INFO L93 Difference]: Finished difference Result 95 states and 101 transitions. [2022-12-14 11:16:17,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:16:17,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 11:16:17,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:17,058 INFO L225 Difference]: With dead ends: 95 [2022-12-14 11:16:17,059 INFO L226 Difference]: Without dead ends: 95 [2022-12-14 11:16:17,059 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 11:16:17,060 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 49 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:17,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 96 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:16:17,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-12-14 11:16:17,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 53. [2022-12-14 11:16:17,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 52 states have internal predecessors, (56), 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 11:16:17,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2022-12-14 11:16:17,064 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 8 [2022-12-14 11:16:17,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:17,064 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2022-12-14 11:16:17,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 11:16:17,064 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2022-12-14 11:16:17,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 11:16:17,065 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:17,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:17,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 11:16:17,065 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-14 11:16:17,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:17,065 INFO L85 PathProgramCache]: Analyzing trace with hash -723638744, now seen corresponding path program 1 times [2022-12-14 11:16:17,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:17,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814671001] [2022-12-14 11:16:17,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:17,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:17,109 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 11:16:17,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:17,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814671001] [2022-12-14 11:16:17,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814671001] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:16:17,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:16:17,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:16:17,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104241538] [2022-12-14 11:16:17,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:16:17,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:16:17,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:17,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:16:17,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:16:17,112 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 11:16:17,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:17,131 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2022-12-14 11:16:17,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:16:17,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 11:16:17,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:17,132 INFO L225 Difference]: With dead ends: 60 [2022-12-14 11:16:17,132 INFO L226 Difference]: Without dead ends: 60 [2022-12-14 11:16:17,133 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 11:16:17,134 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 6 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:17,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 89 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:16:17,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-12-14 11:16:17,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2022-12-14 11:16:17,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 53 states have internal predecessors, (57), 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 11:16:17,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2022-12-14 11:16:17,137 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 8 [2022-12-14 11:16:17,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:17,137 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2022-12-14 11:16:17,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 11:16:17,138 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2022-12-14 11:16:17,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 11:16:17,138 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:17,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:17,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 11:16:17,138 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-14 11:16:17,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:17,139 INFO L85 PathProgramCache]: Analyzing trace with hash 258431700, now seen corresponding path program 1 times [2022-12-14 11:16:17,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:17,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592833083] [2022-12-14 11:16:17,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:17,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:17,287 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 11:16:17,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:17,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592833083] [2022-12-14 11:16:17,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592833083] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:16:17,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:16:17,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:16:17,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620144178] [2022-12-14 11:16:17,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:16:17,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:16:17,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:17,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:16:17,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:16:17,289 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 11:16:17,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:17,371 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2022-12-14 11:16:17,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:16:17,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 11:16:17,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:17,372 INFO L225 Difference]: With dead ends: 75 [2022-12-14 11:16:17,372 INFO L226 Difference]: Without dead ends: 75 [2022-12-14 11:16:17,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:16:17,373 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 91 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:17,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 64 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:16:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-12-14 11:16:17,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 58. [2022-12-14 11:16:17,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 57 states have internal predecessors, (62), 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 11:16:17,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2022-12-14 11:16:17,378 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 10 [2022-12-14 11:16:17,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:17,378 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2022-12-14 11:16:17,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 11:16:17,378 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2022-12-14 11:16:17,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 11:16:17,379 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:17,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:17,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 11:16:17,379 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-14 11:16:17,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:17,379 INFO L85 PathProgramCache]: Analyzing trace with hash 258431701, now seen corresponding path program 1 times [2022-12-14 11:16:17,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:17,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579744371] [2022-12-14 11:16:17,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:17,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:17,546 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 11:16:17,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:17,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579744371] [2022-12-14 11:16:17,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579744371] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:16:17,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:16:17,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:16:17,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238531255] [2022-12-14 11:16:17,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:16:17,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:16:17,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:17,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:16:17,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:16:17,548 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand has 6 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 11:16:17,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:17,639 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2022-12-14 11:16:17,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:16:17,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 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 11:16:17,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:17,640 INFO L225 Difference]: With dead ends: 74 [2022-12-14 11:16:17,640 INFO L226 Difference]: Without dead ends: 74 [2022-12-14 11:16:17,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:16:17,642 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 125 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:17,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 45 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:16:17,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-12-14 11:16:17,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 58. [2022-12-14 11:16:17,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 57 states have internal predecessors, (61), 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 11:16:17,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2022-12-14 11:16:17,645 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 10 [2022-12-14 11:16:17,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:17,645 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2022-12-14 11:16:17,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 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 11:16:17,646 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2022-12-14 11:16:17,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 11:16:17,646 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:17,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:17,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 11:16:17,646 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-14 11:16:17,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:17,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1934580249, now seen corresponding path program 1 times [2022-12-14 11:16:17,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:17,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674835036] [2022-12-14 11:16:17,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:17,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:17,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:16:17,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:17,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674835036] [2022-12-14 11:16:17,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674835036] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:16:17,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:16:17,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:16:17,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719967419] [2022-12-14 11:16:17,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:16:17,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:16:17,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:17,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:16:17,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:16:17,691 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 11:16:17,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:17,744 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2022-12-14 11:16:17,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:16:17,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 11:16:17,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:17,745 INFO L225 Difference]: With dead ends: 72 [2022-12-14 11:16:17,745 INFO L226 Difference]: Without dead ends: 72 [2022-12-14 11:16:17,745 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 11:16:17,746 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 81 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:17,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 54 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:16:17,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-12-14 11:16:17,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2022-12-14 11:16:17,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 55 states have internal predecessors, (59), 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 11:16:17,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2022-12-14 11:16:17,750 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 13 [2022-12-14 11:16:17,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:17,751 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2022-12-14 11:16:17,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 11:16:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2022-12-14 11:16:17,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 11:16:17,751 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:17,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:17,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 11:16:17,752 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-14 11:16:17,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:17,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1934580248, now seen corresponding path program 1 times [2022-12-14 11:16:17,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:17,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307058602] [2022-12-14 11:16:17,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:17,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:17,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:16:17,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:17,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307058602] [2022-12-14 11:16:17,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307058602] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:16:17,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138121978] [2022-12-14 11:16:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:17,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:16:17,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:16:17,803 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:16:17,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:16:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:17,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 11:16:17,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:16:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:16:17,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:16:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:16:17,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138121978] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:16:17,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2037050896] [2022-12-14 11:16:17,963 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 11:16:17,963 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:16:17,966 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:16:17,970 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:16:17,971 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:16:18,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,030 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 11:16:18,075 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 13 treesize of output 9 [2022-12-14 11:16:18,084 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 13 treesize of output 9 [2022-12-14 11:16:18,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,095 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 34 treesize of output 21 [2022-12-14 11:16:18,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,121 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 34 treesize of output 21 [2022-12-14 11:16:18,133 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 23 treesize of output 22 [2022-12-14 11:16:18,144 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 23 treesize of output 22 [2022-12-14 11:16:18,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,170 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 25 [2022-12-14 11:16:18,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,185 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 28 [2022-12-14 11:16:18,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,202 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 25 [2022-12-14 11:16:18,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,235 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 11:16:18,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,275 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 32 treesize of output 34 [2022-12-14 11:16:18,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,291 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 32 treesize of output 34 [2022-12-14 11:16:18,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,314 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 41 treesize of output 31 [2022-12-14 11:16:18,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-12-14 11:16:18,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,366 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 38 [2022-12-14 11:16:18,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-12-14 11:16:18,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,442 INFO L321 Elim1Store]: treesize reduction 54, result has 14.3 percent of original size [2022-12-14 11:16:18,443 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 121 treesize of output 84 [2022-12-14 11:16:18,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,463 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 60 treesize of output 41 [2022-12-14 11:16:18,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:18,480 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 47 treesize of output 43 [2022-12-14 11:16:18,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,530 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 47 treesize of output 54 [2022-12-14 11:16:18,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:18,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:18,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,659 INFO L321 Elim1Store]: treesize reduction 154, result has 12.5 percent of original size [2022-12-14 11:16:18,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 454 treesize of output 444 [2022-12-14 11:16:18,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:18,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:18,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,717 INFO L321 Elim1Store]: treesize reduction 110, result has 16.7 percent of original size [2022-12-14 11:16:18,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 448 treesize of output 431 [2022-12-14 11:16:18,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:18,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:18,748 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 11:16:18,749 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 448 treesize of output 429 [2022-12-14 11:16:18,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:18,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:18,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:18,924 INFO L321 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2022-12-14 11:16:18,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 440 treesize of output 436 [2022-12-14 11:16:18,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:18,946 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:18,953 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 11:16:18,953 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 453 treesize of output 426 [2022-12-14 11:16:18,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:18,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:18,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:18,987 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 11:16:18,987 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 453 treesize of output 438 [2022-12-14 11:16:19,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:19,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:19,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:19,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:19,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:19,161 INFO L321 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-12-14 11:16:19,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 704 treesize of output 575 [2022-12-14 11:16:19,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:19,239 INFO L321 Elim1Store]: treesize reduction 216, result has 16.0 percent of original size [2022-12-14 11:16:19,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 689 treesize of output 577 [2022-12-14 11:16:19,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:19,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:19,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:19,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:19,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:19,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:19,278 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:19,285 INFO L321 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-12-14 11:16:19,286 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 9 case distinctions, treesize of input 607 treesize of output 561 [2022-12-14 11:16:19,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:19,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:19,482 INFO L321 Elim1Store]: treesize reduction 138, result has 10.4 percent of original size [2022-12-14 11:16:19,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 590 treesize of output 584 [2022-12-14 11:16:19,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:16:19,625 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 11:16:19,637 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 11:16:19,661 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 11:16:19,668 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 11:16:19,676 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 11:16:19,710 INFO L321 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-12-14 11:16:19,710 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-12-14 11:16:19,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:19,728 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-12-14 11:16:19,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:19,739 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 57 treesize of output 11 [2022-12-14 11:16:19,789 INFO L321 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-12-14 11:16:19,789 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 28 treesize of output 45 [2022-12-14 11:16:19,811 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-14 11:16:19,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 38 [2022-12-14 11:16:19,835 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 11:16:19,848 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 11:16:19,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:16:19,874 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 11:16:19,881 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 11:16:19,888 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 11:16:19,922 INFO L321 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-12-14 11:16:19,922 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-12-14 11:16:19,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:19,932 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-12-14 11:16:19,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:19,943 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 57 treesize of output 11 [2022-12-14 11:16:19,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:16:19,985 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 13 treesize of output 9 [2022-12-14 11:16:19,992 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 13 treesize of output 9 [2022-12-14 11:16:20,057 INFO L321 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-12-14 11:16:20,057 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 28 treesize of output 45 [2022-12-14 11:16:20,073 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-14 11:16:20,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 38 [2022-12-14 11:16:20,092 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:16:20,885 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1250#(and (= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4))) (<= (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 8) (select |#length| |ULTIMATE.start_dll_circular_create_~last~0#1.base|)) (<= 0 |#NULL.base|) (<= 1 |ULTIMATE.start_main_~data_init~0#1|) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 5) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= (select |#valid| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) 1) (<= |ULTIMATE.start_main_~data_init~0#1| 1) (<= |#NULL.offset| 0) (<= 5 |ULTIMATE.start_main_~len~0#1|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4)) |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |ULTIMATE.start_main_~len~0#1| 5) (<= |#NULL.base| 0) (< (select |#length| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 12)) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 5 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|))' at error location [2022-12-14 11:16:20,885 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:16:20,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:16:20,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-14 11:16:20,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092234981] [2022-12-14 11:16:20,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:16:20,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:16:20,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:20,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:16:20,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-12-14 11:16:20,886 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 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 11:16:20,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:20,906 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2022-12-14 11:16:20,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:16:20,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 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 13 [2022-12-14 11:16:20,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:20,906 INFO L225 Difference]: With dead ends: 69 [2022-12-14 11:16:20,906 INFO L226 Difference]: Without dead ends: 69 [2022-12-14 11:16:20,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-12-14 11:16:20,907 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 13 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:20,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 93 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:16:20,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-12-14 11:16:20,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2022-12-14 11:16:20,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 46 states have (on average 1.565217391304348) internal successors, (72), 66 states have internal predecessors, (72), 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 11:16:20,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2022-12-14 11:16:20,910 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 13 [2022-12-14 11:16:20,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:20,910 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2022-12-14 11:16:20,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 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 11:16:20,910 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2022-12-14 11:16:20,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 11:16:20,910 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:20,910 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:20,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:16:21,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:16:21,111 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-14 11:16:21,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:21,111 INFO L85 PathProgramCache]: Analyzing trace with hash 479782612, now seen corresponding path program 1 times [2022-12-14 11:16:21,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:21,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294969397] [2022-12-14 11:16:21,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:21,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:21,221 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:16:21,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:21,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294969397] [2022-12-14 11:16:21,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294969397] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:16:21,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084214888] [2022-12-14 11:16:21,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:21,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:16:21,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:16:21,222 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:16:21,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:16:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:21,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 11:16:21,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:16:21,310 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 11:16:21,313 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 11:16:21,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 11:16:21,358 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:16:21,359 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 11:16:21,374 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:16:21,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:16:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:16:21,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084214888] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:16:21,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1142894261] [2022-12-14 11:16:21,570 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 11:16:21,570 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:16:21,571 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:16:21,571 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:16:21,571 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:16:21,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,588 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 11:16:21,603 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 13 treesize of output 9 [2022-12-14 11:16:21,609 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 13 treesize of output 9 [2022-12-14 11:16:21,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,617 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 34 treesize of output 21 [2022-12-14 11:16:21,630 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 23 treesize of output 22 [2022-12-14 11:16:21,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,640 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 34 treesize of output 21 [2022-12-14 11:16:21,646 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 23 treesize of output 22 [2022-12-14 11:16:21,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,663 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 25 [2022-12-14 11:16:21,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,675 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 28 [2022-12-14 11:16:21,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,686 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 25 [2022-12-14 11:16:21,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,712 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 11:16:21,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,750 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 32 treesize of output 34 [2022-12-14 11:16:21,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,762 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 32 treesize of output 34 [2022-12-14 11:16:21,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,778 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 41 treesize of output 31 [2022-12-14 11:16:21,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,807 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 38 [2022-12-14 11:16:21,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-12-14 11:16:21,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-12-14 11:16:21,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,879 INFO L321 Elim1Store]: treesize reduction 54, result has 14.3 percent of original size [2022-12-14 11:16:21,880 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 121 treesize of output 84 [2022-12-14 11:16:21,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,895 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 41 [2022-12-14 11:16:21,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,907 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 41 treesize of output 37 [2022-12-14 11:16:21,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:21,940 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 53 treesize of output 54 [2022-12-14 11:16:22,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:22,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:22,023 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-12-14 11:16:22,024 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 485 treesize of output 421 [2022-12-14 11:16:22,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:22,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:22,049 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-12-14 11:16:22,049 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 491 treesize of output 472 [2022-12-14 11:16:22,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:22,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:22,083 INFO L321 Elim1Store]: treesize reduction 68, result has 26.9 percent of original size [2022-12-14 11:16:22,083 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 485 treesize of output 478 [2022-12-14 11:16:22,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:22,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:22,178 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-12-14 11:16:22,179 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 496 treesize of output 481 [2022-12-14 11:16:22,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:22,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,196 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:22,202 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 11:16:22,202 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 496 treesize of output 424 [2022-12-14 11:16:22,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:22,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:22,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:22,240 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-12-14 11:16:22,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 483 treesize of output 479 [2022-12-14 11:16:22,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:22,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:22,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:22,361 INFO L321 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-12-14 11:16:22,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 663 treesize of output 549 [2022-12-14 11:16:22,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:22,416 INFO L321 Elim1Store]: treesize reduction 212, result has 14.2 percent of original size [2022-12-14 11:16:22,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 588 treesize of output 512 [2022-12-14 11:16:22,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:22,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:22,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:22,450 INFO L321 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-12-14 11:16:22,450 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 9 case distinctions, treesize of input 506 treesize of output 460 [2022-12-14 11:16:22,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:22,735 INFO L321 Elim1Store]: treesize reduction 246, result has 9.9 percent of original size [2022-12-14 11:16:22,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 1040 treesize of output 1019 [2022-12-14 11:16:22,926 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 11:16:22,930 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 11:16:22,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:16:22,948 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 11:16:22,954 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 11:16:22,961 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 11:16:22,990 INFO L321 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-12-14 11:16:22,990 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-12-14 11:16:23,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:23,005 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-12-14 11:16:23,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:23,013 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 57 treesize of output 11 [2022-12-14 11:16:23,056 INFO L321 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-12-14 11:16:23,056 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 28 treesize of output 45 [2022-12-14 11:16:23,072 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-14 11:16:23,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 38 [2022-12-14 11:16:23,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:16:23,110 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 11:16:23,121 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 11:16:23,136 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 11:16:23,142 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 11:16:23,149 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 11:16:23,190 INFO L321 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-12-14 11:16:23,190 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-12-14 11:16:23,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:23,203 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-12-14 11:16:23,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:23,215 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 57 treesize of output 11 [2022-12-14 11:16:23,281 INFO L321 Elim1Store]: treesize reduction 32, result has 58.4 percent of original size [2022-12-14 11:16:23,282 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 3 case distinctions, treesize of input 33 treesize of output 66 [2022-12-14 11:16:23,348 INFO L321 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-12-14 11:16:23,349 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 28 treesize of output 45 [2022-12-14 11:16:23,367 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:16:24,323 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1491#(and (= (select |#valid| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 1) (<= |ULTIMATE.start_dll_circular_create_~len#1| 5) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 5) (= (select (select |#memory_int| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |ULTIMATE.start_dll_circular_create_~data#1|) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= |#NULL.offset| 0) (<= 5 |ULTIMATE.start_main_~len~0#1|) (= |ULTIMATE.start_main_~data_init~0#1| 1) (<= 0 |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4)) |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |ULTIMATE.start_main_~len~0#1| 5) (<= |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 0) (< (select |#length| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 12)) (= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 5 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= (+ |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 8) (select |#length| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)) (= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4))) (= |#NULL.base| 0))' at error location [2022-12-14 11:16:24,323 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:16:24,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:16:24,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2022-12-14 11:16:24,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345453687] [2022-12-14 11:16:24,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:16:24,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 11:16:24,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:24,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 11:16:24,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-12-14 11:16:24,324 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 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 11:16:24,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:24,455 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2022-12-14 11:16:24,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:16:24,455 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 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 11:16:24,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:24,456 INFO L225 Difference]: With dead ends: 81 [2022-12-14 11:16:24,456 INFO L226 Difference]: Without dead ends: 81 [2022-12-14 11:16:24,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2022-12-14 11:16:24,456 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 216 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:24,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 71 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:16:24,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-12-14 11:16:24,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 65. [2022-12-14 11:16:24,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 64 states have internal predecessors, (68), 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 11:16:24,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2022-12-14 11:16:24,459 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 15 [2022-12-14 11:16:24,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:24,459 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2022-12-14 11:16:24,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 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 11:16:24,459 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2022-12-14 11:16:24,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 11:16:24,459 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:24,459 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:24,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:16:24,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:16:24,661 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-14 11:16:24,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:24,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2112537853, now seen corresponding path program 1 times [2022-12-14 11:16:24,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:24,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573086989] [2022-12-14 11:16:24,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:24,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:24,806 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 11:16:24,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:24,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573086989] [2022-12-14 11:16:24,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573086989] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:16:24,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:16:24,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:16:24,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373305118] [2022-12-14 11:16:24,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:16:24,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:16:24,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:24,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:16:24,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:16:24,808 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 11:16:24,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:24,885 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2022-12-14 11:16:24,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:16:24,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 29 [2022-12-14 11:16:24,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:24,886 INFO L225 Difference]: With dead ends: 77 [2022-12-14 11:16:24,887 INFO L226 Difference]: Without dead ends: 77 [2022-12-14 11:16:24,887 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 11:16:24,887 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 98 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:24,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 46 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:16:24,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-14 11:16:24,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 62. [2022-12-14 11:16:24,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 61 states have internal predecessors, (66), 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 11:16:24,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2022-12-14 11:16:24,891 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 29 [2022-12-14 11:16:24,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:24,891 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2022-12-14 11:16:24,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 11:16:24,892 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2022-12-14 11:16:24,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 11:16:24,892 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:24,892 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:24,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 11:16:24,892 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-14 11:16:24,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:24,892 INFO L85 PathProgramCache]: Analyzing trace with hash -2112537852, now seen corresponding path program 1 times [2022-12-14 11:16:24,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:24,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884708850] [2022-12-14 11:16:24,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:24,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:25,050 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 11:16:25,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:25,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884708850] [2022-12-14 11:16:25,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884708850] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:16:25,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:16:25,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:16:25,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610641521] [2022-12-14 11:16:25,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:16:25,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:16:25,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:25,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:16:25,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:16:25,051 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 5 states, 4 states have (on average 4.75) 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 11:16:25,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:25,124 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2022-12-14 11:16:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:16:25,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) 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 29 [2022-12-14 11:16:25,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:25,125 INFO L225 Difference]: With dead ends: 67 [2022-12-14 11:16:25,125 INFO L226 Difference]: Without dead ends: 67 [2022-12-14 11:16:25,125 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 11:16:25,126 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 96 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:25,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 51 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:16:25,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-12-14 11:16:25,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2022-12-14 11:16:25,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 50 states have (on average 1.38) internal successors, (69), 64 states have internal predecessors, (69), 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 11:16:25,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2022-12-14 11:16:25,129 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 29 [2022-12-14 11:16:25,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:25,129 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2022-12-14 11:16:25,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) 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 11:16:25,130 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2022-12-14 11:16:25,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 11:16:25,130 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:25,131 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:25,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 11:16:25,131 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-14 11:16:25,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:25,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1370655646, now seen corresponding path program 1 times [2022-12-14 11:16:25,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:25,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723236454] [2022-12-14 11:16:25,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:25,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:25,589 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 11:16:25,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:25,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723236454] [2022-12-14 11:16:25,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723236454] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:16:25,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581132697] [2022-12-14 11:16:25,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:25,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:16:25,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:16:25,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:16:25,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:16:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:25,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-14 11:16:25,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:16:25,756 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:16:25,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 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 11:16:25,798 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:16:25,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-12-14 11:16:25,874 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-14 11:16:25,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-12-14 11:16:25,919 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 11:16:25,956 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 14 treesize of output 16 [2022-12-14 11:16:25,990 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 14 treesize of output 16 [2022-12-14 11:16:26,024 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 19 treesize of output 18 [2022-12-14 11:16:26,046 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 11:16:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:16:26,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:16:26,132 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:16:26,132 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2022-12-14 11:16:26,135 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 60 treesize of output 52 [2022-12-14 11:16:26,138 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 48 treesize of output 44 [2022-12-14 11:16:26,140 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 22 treesize of output 20 [2022-12-14 11:16:26,414 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:16:26,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 49 [2022-12-14 11:16:26,475 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:16:26,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581132697] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:16:26,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [16696355] [2022-12-14 11:16:26,476 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-12-14 11:16:26,477 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:16:26,477 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:16:26,477 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:16:26,477 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:16:26,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,492 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 11:16:26,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,511 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 34 treesize of output 21 [2022-12-14 11:16:26,518 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 13 treesize of output 9 [2022-12-14 11:16:26,522 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 13 treesize of output 9 [2022-12-14 11:16:26,540 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 23 treesize of output 22 [2022-12-14 11:16:26,545 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 23 treesize of output 22 [2022-12-14 11:16:26,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,551 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 34 treesize of output 21 [2022-12-14 11:16:26,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,567 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 28 [2022-12-14 11:16:26,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,575 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 25 [2022-12-14 11:16:26,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,587 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 25 [2022-12-14 11:16:26,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,624 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 11:16:26,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,654 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 32 treesize of output 34 [2022-12-14 11:16:26,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,666 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 32 treesize of output 34 [2022-12-14 11:16:26,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,684 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 41 treesize of output 31 [2022-12-14 11:16:26,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-12-14 11:16:26,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-12-14 11:16:26,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,737 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 38 [2022-12-14 11:16:26,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,767 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 41 [2022-12-14 11:16:26,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,781 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 41 treesize of output 37 [2022-12-14 11:16:26,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,795 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 41 treesize of output 37 [2022-12-14 11:16:26,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,834 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 40 treesize of output 49 [2022-12-14 11:16:26,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:26,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:26,917 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-12-14 11:16:26,917 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 488 treesize of output 424 [2022-12-14 11:16:26,937 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:26,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:26,956 INFO L321 Elim1Store]: treesize reduction 66, result has 25.8 percent of original size [2022-12-14 11:16:26,957 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 488 treesize of output 481 [2022-12-14 11:16:26,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:26,973 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:26,977 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-12-14 11:16:26,978 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 494 treesize of output 475 [2022-12-14 11:16:27,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:27,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:27,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:27,069 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:27,069 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:27,075 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 11:16:27,075 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 499 treesize of output 427 [2022-12-14 11:16:27,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:27,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:27,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:27,091 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:27,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:27,092 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:27,097 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-12-14 11:16:27,097 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 499 treesize of output 484 [2022-12-14 11:16:27,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:27,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:27,137 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-12-14 11:16:27,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 486 treesize of output 482 [2022-12-14 11:16:27,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:27,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:27,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:27,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:27,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:27,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:27,253 INFO L321 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-12-14 11:16:27,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 642 treesize of output 528 [2022-12-14 11:16:27,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:27,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:27,315 INFO L321 Elim1Store]: treesize reduction 186, result has 15.8 percent of original size [2022-12-14 11:16:27,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 567 treesize of output 512 [2022-12-14 11:16:27,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:27,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:27,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:27,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:27,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:27,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:27,346 INFO L321 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-12-14 11:16:27,346 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 9 case distinctions, treesize of input 485 treesize of output 439 [2022-12-14 11:16:27,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:27,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:27,625 INFO L321 Elim1Store]: treesize reduction 246, result has 9.9 percent of original size [2022-12-14 11:16:27,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 998 treesize of output 973 [2022-12-14 11:16:27,824 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 11:16:27,829 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 11:16:27,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:16:27,849 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 11:16:27,854 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 11:16:27,859 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 11:16:27,884 INFO L321 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-12-14 11:16:27,884 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-12-14 11:16:27,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:27,894 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-12-14 11:16:27,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:27,903 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 57 treesize of output 11 [2022-12-14 11:16:27,941 INFO L321 Elim1Store]: treesize reduction 32, result has 58.4 percent of original size [2022-12-14 11:16:27,941 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 3 case distinctions, treesize of input 33 treesize of output 66 [2022-12-14 11:16:27,984 INFO L321 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-12-14 11:16:27,984 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 28 treesize of output 45 [2022-12-14 11:16:28,014 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 11:16:28,018 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 11:16:28,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:16:28,048 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 11:16:28,054 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 11:16:28,061 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 11:16:28,089 INFO L321 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-12-14 11:16:28,089 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-12-14 11:16:28,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:28,101 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-12-14 11:16:28,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:28,110 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 57 treesize of output 11 [2022-12-14 11:16:28,142 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 11:16:28,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:16:28,153 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 11:16:28,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:28,174 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 23 treesize of output 22 [2022-12-14 11:16:28,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:16:28,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:28,192 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 23 treesize of output 22 [2022-12-14 11:16:28,260 INFO L321 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-12-14 11:16:28,261 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 28 treesize of output 45 [2022-12-14 11:16:28,274 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-14 11:16:28,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 38 [2022-12-14 11:16:28,285 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:16:29,988 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2154#(and (= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4))) (= |ULTIMATE.start_main_~data_new~0#1| 1) (<= (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 8) (select |#length| |ULTIMATE.start_dll_circular_create_~last~0#1.base|)) (<= 0 |#NULL.base|) (<= (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 12) (select |#length| |ULTIMATE.start_dll_circular_create_~head~0#1.base|)) (<= 1 |ULTIMATE.start_main_~data_init~0#1|) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 5) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= |ULTIMATE.start_dll_circular_create_#res#1.offset| |ULTIMATE.start_main_~head~1#1.offset|) (= (select |#valid| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) 1) (= |ULTIMATE.start_dll_circular_create_#res#1.offset| |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= |ULTIMATE.start_main_~data_init~0#1| 1) (<= |#NULL.offset| 0) (<= 5 |ULTIMATE.start_main_~len~0#1|) (= (select |#valid| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) 1) (= |ULTIMATE.start_main_~head~1#1.offset| |ULTIMATE.start_main_~ptr~0#1.offset|) (not (= |ULTIMATE.start_main_~data_init~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4)) |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (= |ULTIMATE.start_dll_circular_create_#res#1.base| |ULTIMATE.start_main_~head~1#1.base|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |ULTIMATE.start_main_~len~0#1| 5) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 8)) |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (<= |#NULL.base| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 8)) |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= 5 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~ptr~0#1.base| |ULTIMATE.start_main_~head~1#1.base|) (= |ULTIMATE.start_dll_circular_create_#res#1.base| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (<= 0 |ULTIMATE.start_main_~ptr~0#1.offset|))' at error location [2022-12-14 11:16:29,988 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:16:29,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:16:29,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 12] total 30 [2022-12-14 11:16:29,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821047112] [2022-12-14 11:16:29,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:16:29,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-14 11:16:29,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:29,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-14 11:16:29,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1662, Unknown=9, NotChecked=0, Total=1892 [2022-12-14 11:16:29,990 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 30 states have internal predecessors, (81), 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 11:16:30,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:30,486 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2022-12-14 11:16:30,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 11:16:30,487 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 30 states have internal predecessors, (81), 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 31 [2022-12-14 11:16:30,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:30,487 INFO L225 Difference]: With dead ends: 79 [2022-12-14 11:16:30,487 INFO L226 Difference]: Without dead ends: 79 [2022-12-14 11:16:30,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=474, Invalid=2487, Unknown=9, NotChecked=0, Total=2970 [2022-12-14 11:16:30,488 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 299 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:30,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 344 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:16:30,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-12-14 11:16:30,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 65. [2022-12-14 11:16:30,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 50 states have (on average 1.36) internal successors, (68), 64 states have internal predecessors, (68), 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 11:16:30,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2022-12-14 11:16:30,490 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 31 [2022-12-14 11:16:30,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:30,490 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2022-12-14 11:16:30,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 30 states have internal predecessors, (81), 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 11:16:30,490 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2022-12-14 11:16:30,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 11:16:30,491 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:30,491 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:30,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 11:16:30,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:16:30,692 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-14 11:16:30,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:30,693 INFO L85 PathProgramCache]: Analyzing trace with hash 948557909, now seen corresponding path program 1 times [2022-12-14 11:16:30,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:30,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999675309] [2022-12-14 11:16:30,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:30,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:30,854 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 11:16:30,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:30,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999675309] [2022-12-14 11:16:30,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999675309] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:16:30,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:16:30,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 11:16:30,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279165275] [2022-12-14 11:16:30,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:16:30,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 11:16:30,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:30,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 11:16:30,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:16:30,856 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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 11:16:30,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:30,941 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2022-12-14 11:16:30,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 11:16:30,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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 34 [2022-12-14 11:16:30,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:30,942 INFO L225 Difference]: With dead ends: 79 [2022-12-14 11:16:30,942 INFO L226 Difference]: Without dead ends: 79 [2022-12-14 11:16:30,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 11:16:30,943 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 111 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:30,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 50 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:16:30,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-12-14 11:16:30,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 63. [2022-12-14 11:16:30,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 50 states have (on average 1.32) internal successors, (66), 62 states have internal predecessors, (66), 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 11:16:30,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2022-12-14 11:16:30,946 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 34 [2022-12-14 11:16:30,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:30,946 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2022-12-14 11:16:30,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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 11:16:30,946 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2022-12-14 11:16:30,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 11:16:30,947 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:30,947 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:30,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 11:16:30,948 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-14 11:16:30,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:30,948 INFO L85 PathProgramCache]: Analyzing trace with hash 948557910, now seen corresponding path program 1 times [2022-12-14 11:16:30,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:30,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319829290] [2022-12-14 11:16:30,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:30,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:31,150 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 11:16:31,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:31,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319829290] [2022-12-14 11:16:31,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319829290] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:16:31,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:16:31,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 11:16:31,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912267274] [2022-12-14 11:16:31,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:16:31,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 11:16:31,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:31,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 11:16:31,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:16:31,152 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 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 11:16:31,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:31,271 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2022-12-14 11:16:31,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:16:31,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 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 34 [2022-12-14 11:16:31,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:31,271 INFO L225 Difference]: With dead ends: 63 [2022-12-14 11:16:31,272 INFO L226 Difference]: Without dead ends: 63 [2022-12-14 11:16:31,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-14 11:16:31,272 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 94 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:31,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 54 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:16:31,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-12-14 11:16:31,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2022-12-14 11:16:31,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 50 states have (on average 1.28) internal successors, (64), 60 states have internal predecessors, (64), 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 11:16:31,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2022-12-14 11:16:31,274 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 34 [2022-12-14 11:16:31,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:31,274 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2022-12-14 11:16:31,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 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 11:16:31,274 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2022-12-14 11:16:31,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 11:16:31,274 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:31,275 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:31,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 11:16:31,275 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-14 11:16:31,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:31,275 INFO L85 PathProgramCache]: Analyzing trace with hash 948557947, now seen corresponding path program 1 times [2022-12-14 11:16:31,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:31,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118939008] [2022-12-14 11:16:31,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:31,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:16:31,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:31,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118939008] [2022-12-14 11:16:31,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118939008] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:16:31,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903221932] [2022-12-14 11:16:31,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:31,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:16:31,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:16:31,903 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:16:31,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 11:16:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:32,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-14 11:16:32,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:16:32,082 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:16:32,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 18 [2022-12-14 11:16:32,131 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:16:32,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 22 [2022-12-14 11:16:32,192 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-14 11:16:32,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-12-14 11:16:32,218 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 13 treesize of output 9 [2022-12-14 11:16:32,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:32,243 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 21 treesize of output 20 [2022-12-14 11:16:32,259 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:16:32,260 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2022-12-14 11:16:32,293 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 28 treesize of output 28 [2022-12-14 11:16:32,319 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 29 treesize of output 24 [2022-12-14 11:16:32,349 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 29 treesize of output 24 [2022-12-14 11:16:32,357 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 25 treesize of output 13 [2022-12-14 11:16:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:16:32,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:16:34,514 INFO L321 Elim1Store]: treesize reduction 5, result has 75.0 percent of original size [2022-12-14 11:16:34,514 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 24 treesize of output 23 [2022-12-14 11:16:34,598 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:16:34,598 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 28 treesize of output 34 [2022-12-14 11:16:34,601 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 70 treesize of output 58 [2022-12-14 11:16:34,605 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 46 treesize of output 38 [2022-12-14 11:16:34,608 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 24 treesize of output 20 [2022-12-14 11:16:34,883 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-14 11:16:34,884 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 46 treesize of output 45 [2022-12-14 11:16:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:16:34,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903221932] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:16:34,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1202160965] [2022-12-14 11:16:34,903 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 11:16:34,903 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:16:34,903 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:16:34,903 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:16:34,903 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:16:34,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:34,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:34,922 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 11:16:34,941 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 13 treesize of output 9 [2022-12-14 11:16:34,948 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 13 treesize of output 9 [2022-12-14 11:16:34,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:34,955 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 34 treesize of output 21 [2022-12-14 11:16:34,971 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 23 treesize of output 22 [2022-12-14 11:16:34,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:34,979 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 34 treesize of output 21 [2022-12-14 11:16:34,986 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 23 treesize of output 22 [2022-12-14 11:16:35,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,011 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 28 [2022-12-14 11:16:35,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,023 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 25 [2022-12-14 11:16:35,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,033 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 25 [2022-12-14 11:16:35,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,060 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 11:16:35,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,083 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 32 treesize of output 34 [2022-12-14 11:16:35,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,095 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 41 treesize of output 31 [2022-12-14 11:16:35,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,107 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 32 treesize of output 34 [2022-12-14 11:16:35,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,129 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 38 [2022-12-14 11:16:35,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-12-14 11:16:35,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-12-14 11:16:35,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,183 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-12-14 11:16:35,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 84 [2022-12-14 11:16:35,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,195 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 53 treesize of output 43 [2022-12-14 11:16:35,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,210 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 66 treesize of output 41 [2022-12-14 11:16:35,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 54 [2022-12-14 11:16:35,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:35,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:35,325 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 11:16:35,326 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 462 treesize of output 443 [2022-12-14 11:16:35,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:35,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:35,366 INFO L321 Elim1Store]: treesize reduction 52, result has 26.8 percent of original size [2022-12-14 11:16:35,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 456 treesize of output 437 [2022-12-14 11:16:35,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:35,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:35,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,410 INFO L321 Elim1Store]: treesize reduction 58, result has 24.7 percent of original size [2022-12-14 11:16:35,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 456 treesize of output 458 [2022-12-14 11:16:35,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:35,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:35,491 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-12-14 11:16:35,491 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 6 new quantified variables, introduced 10 case distinctions, treesize of input 467 treesize of output 440 [2022-12-14 11:16:35,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:35,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:35,516 INFO L321 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2022-12-14 11:16:35,516 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 467 treesize of output 461 [2022-12-14 11:16:35,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:35,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:35,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:35,566 INFO L321 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2022-12-14 11:16:35,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 454 treesize of output 450 [2022-12-14 11:16:35,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:35,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:35,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:35,702 INFO L321 Elim1Store]: treesize reduction 70, result has 19.5 percent of original size [2022-12-14 11:16:35,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 735 treesize of output 552 [2022-12-14 11:16:35,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:35,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:35,724 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:35,730 INFO L321 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-12-14 11:16:35,731 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 9 case distinctions, treesize of input 620 treesize of output 574 [2022-12-14 11:16:35,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:35,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,800 INFO L321 Elim1Store]: treesize reduction 292, result has 13.1 percent of original size [2022-12-14 11:16:35,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 708 treesize of output 620 [2022-12-14 11:16:35,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:35,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:36,031 INFO L321 Elim1Store]: treesize reduction 344, result has 9.7 percent of original size [2022-12-14 11:16:36,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 712 treesize of output 709 [2022-12-14 11:16:36,153 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 11:16:36,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:16:36,163 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 11:16:36,182 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 11:16:36,194 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 11:16:36,202 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 11:16:36,241 INFO L321 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-12-14 11:16:36,241 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-12-14 11:16:36,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:36,254 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-12-14 11:16:36,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:36,265 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 57 treesize of output 11 [2022-12-14 11:16:36,309 INFO L321 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-12-14 11:16:36,309 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 28 treesize of output 45 [2022-12-14 11:16:36,328 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-14 11:16:36,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 38 [2022-12-14 11:16:36,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:16:36,362 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 11:16:36,371 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 11:16:36,385 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 11:16:36,395 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 11:16:36,401 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 11:16:36,432 INFO L321 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-12-14 11:16:36,432 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-12-14 11:16:36,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:36,445 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-12-14 11:16:36,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:36,455 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 57 treesize of output 11 [2022-12-14 11:16:36,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:16:36,491 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 11:16:36,496 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 11:16:36,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:16:36,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:36,524 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 23 treesize of output 22 [2022-12-14 11:16:36,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:36,534 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 23 treesize of output 22 [2022-12-14 11:16:36,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:36,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:36,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:36,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:36,590 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:16:36,591 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 1 case distinctions, treesize of input 34 treesize of output 25 [2022-12-14 11:16:36,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:36,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:36,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:36,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:36,607 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:16:36,607 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 1 case distinctions, treesize of input 34 treesize of output 25 [2022-12-14 11:16:36,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:16:36,664 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 11:16:36,670 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 11:16:36,677 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 11:16:36,742 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 11:16:36,750 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 11:16:36,756 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 11:16:36,861 INFO L321 Elim1Store]: treesize reduction 32, result has 58.4 percent of original size [2022-12-14 11:16:36,862 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 3 case distinctions, treesize of input 33 treesize of output 66 [2022-12-14 11:16:36,914 INFO L321 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-12-14 11:16:36,914 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 28 treesize of output 45 [2022-12-14 11:16:36,932 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:16:38,462 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2864#(and (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 5) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (not (= (select |#valid| |ULTIMATE.start_main_~ptr~0#1.base|) 1)) (<= |ULTIMATE.start_main_~head~1#1.offset| 0) (= |ULTIMATE.start_main_~data_init~0#1| 1) (<= 0 |ULTIMATE.start_main_~head~1#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 5) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= 5 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:16:38,462 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:16:38,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:16:38,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 15] total 36 [2022-12-14 11:16:38,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620214945] [2022-12-14 11:16:38,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:16:38,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-14 11:16:38,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:38,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-14 11:16:38,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=2377, Unknown=5, NotChecked=0, Total=2652 [2022-12-14 11:16:38,464 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 37 states, 36 states have (on average 2.4722222222222223) internal successors, (89), 37 states have internal predecessors, (89), 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 11:16:39,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:39,068 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2022-12-14 11:16:39,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 11:16:39,068 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.4722222222222223) internal successors, (89), 37 states have internal predecessors, (89), 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 34 [2022-12-14 11:16:39,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:39,069 INFO L225 Difference]: With dead ends: 85 [2022-12-14 11:16:39,069 INFO L226 Difference]: Without dead ends: 85 [2022-12-14 11:16:39,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1324 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=527, Invalid=3374, Unknown=5, NotChecked=0, Total=3906 [2022-12-14 11:16:39,070 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 364 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:39,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 213 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:16:39,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-12-14 11:16:39,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 63. [2022-12-14 11:16:39,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 62 states have internal predecessors, (68), 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 11:16:39,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2022-12-14 11:16:39,072 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 34 [2022-12-14 11:16:39,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:39,072 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2022-12-14 11:16:39,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.4722222222222223) internal successors, (89), 37 states have internal predecessors, (89), 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 11:16:39,073 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2022-12-14 11:16:39,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 11:16:39,073 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:39,073 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:39,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 11:16:39,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 11:16:39,275 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-14 11:16:39,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:39,276 INFO L85 PathProgramCache]: Analyzing trace with hash 948557948, now seen corresponding path program 1 times [2022-12-14 11:16:39,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:39,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423165893] [2022-12-14 11:16:39,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:39,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:40,199 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:16:40,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:40,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423165893] [2022-12-14 11:16:40,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423165893] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:16:40,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989547914] [2022-12-14 11:16:40,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:40,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:16:40,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:16:40,200 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:16:40,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 11:16:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:40,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 70 conjunts are in the unsatisfiable core [2022-12-14 11:16:40,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:16:40,351 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:16:40,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 18 [2022-12-14 11:16:40,397 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:16:40,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 22 [2022-12-14 11:16:40,471 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-14 11:16:40,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-12-14 11:16:40,501 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 13 treesize of output 9 [2022-12-14 11:16:40,505 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 13 treesize of output 9 [2022-12-14 11:16:40,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:40,537 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 21 treesize of output 20 [2022-12-14 11:16:40,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:40,544 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 21 treesize of output 20 [2022-12-14 11:16:40,563 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:16:40,563 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-12-14 11:16:40,569 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 22 treesize of output 24 [2022-12-14 11:16:40,616 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 11:16:40,619 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 28 treesize of output 28 [2022-12-14 11:16:40,661 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 19 treesize of output 18 [2022-12-14 11:16:40,664 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 29 treesize of output 24 [2022-12-14 11:16:40,704 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 29 treesize of output 24 [2022-12-14 11:16:40,711 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 19 treesize of output 18 [2022-12-14 11:16:40,718 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 11:16:40,720 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 25 treesize of output 13 [2022-12-14 11:16:40,740 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:16:40,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:16:40,897 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:16:40,897 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 56 treesize of output 60 [2022-12-14 11:16:41,090 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:16:41,090 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 30 treesize of output 36 [2022-12-14 11:16:41,093 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 156 treesize of output 138 [2022-12-14 11:16:41,099 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 114 treesize of output 106 [2022-12-14 11:16:41,102 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 106 treesize of output 90 [2022-12-14 11:16:41,134 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:16:41,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2022-12-14 11:16:41,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:41,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:41,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 20 treesize of output 8 [2022-12-14 11:16:41,145 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-14 11:16:41,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 1 [2022-12-14 11:16:41,452 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-14 11:16:41,452 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 62 treesize of output 59 [2022-12-14 11:16:41,466 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:16:41,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989547914] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:16:41,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2006646836] [2022-12-14 11:16:41,468 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 11:16:41,468 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:16:41,469 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:16:41,469 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:16:41,469 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:16:41,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,484 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 11:16:41,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,508 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 34 treesize of output 21 [2022-12-14 11:16:41,515 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 13 treesize of output 9 [2022-12-14 11:16:41,523 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 13 treesize of output 9 [2022-12-14 11:16:41,535 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 23 treesize of output 22 [2022-12-14 11:16:41,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,543 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 34 treesize of output 21 [2022-12-14 11:16:41,551 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 23 treesize of output 22 [2022-12-14 11:16:41,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,571 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 28 [2022-12-14 11:16:41,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,580 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 25 [2022-12-14 11:16:41,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,591 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 25 [2022-12-14 11:16:41,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,617 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 11:16:41,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,642 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 32 treesize of output 34 [2022-12-14 11:16:41,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,653 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 32 treesize of output 34 [2022-12-14 11:16:41,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,671 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 41 treesize of output 31 [2022-12-14 11:16:41,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,692 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 38 [2022-12-14 11:16:41,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-12-14 11:16:41,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-12-14 11:16:41,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,744 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 41 treesize of output 37 [2022-12-14 11:16:41,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,759 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 41 treesize of output 37 [2022-12-14 11:16:41,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,776 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 41 [2022-12-14 11:16:41,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,810 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 11:16:41,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:41,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:41,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,905 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-12-14 11:16:41,905 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 425 treesize of output 418 [2022-12-14 11:16:41,922 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:41,923 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:41,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,949 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-12-14 11:16:41,949 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 425 treesize of output 418 [2022-12-14 11:16:41,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:41,972 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:41,972 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:41,979 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 11:16:41,979 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 431 treesize of output 412 [2022-12-14 11:16:42,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:42,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:42,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:42,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:42,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:42,071 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 11:16:42,072 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 436 treesize of output 421 [2022-12-14 11:16:42,088 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:42,089 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:42,089 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:42,123 INFO L321 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2022-12-14 11:16:42,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 423 treesize of output 419 [2022-12-14 11:16:42,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:42,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:42,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:42,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:42,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:42,147 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 11:16:42,148 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 436 treesize of output 421 [2022-12-14 11:16:42,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:42,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:42,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:42,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:42,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:42,267 INFO L321 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-12-14 11:16:42,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 663 treesize of output 546 [2022-12-14 11:16:42,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:42,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:42,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:42,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:42,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:42,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:42,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:42,297 INFO L321 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-12-14 11:16:42,297 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 9 case distinctions, treesize of input 566 treesize of output 520 [2022-12-14 11:16:42,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:42,358 INFO L321 Elim1Store]: treesize reduction 216, result has 16.0 percent of original size [2022-12-14 11:16:42,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 599 treesize of output 535 [2022-12-14 11:16:42,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:42,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:42,604 INFO L321 Elim1Store]: treesize reduction 138, result has 10.4 percent of original size [2022-12-14 11:16:42,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 1040 treesize of output 1008 [2022-12-14 11:16:42,807 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 11:16:42,813 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 11:16:42,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:16:42,837 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 11:16:42,843 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 11:16:42,851 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 11:16:42,881 INFO L321 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-12-14 11:16:42,881 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-12-14 11:16:42,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:42,893 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-12-14 11:16:42,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:42,903 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 57 treesize of output 11 [2022-12-14 11:16:42,948 INFO L321 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-12-14 11:16:42,948 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 28 treesize of output 45 [2022-12-14 11:16:42,970 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-14 11:16:42,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 38 [2022-12-14 11:16:43,013 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 11:16:43,018 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 11:16:43,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:16:43,045 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 11:16:43,053 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 11:16:43,060 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 11:16:43,097 INFO L321 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-12-14 11:16:43,098 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 151 [2022-12-14 11:16:43,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:43,110 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 92 [2022-12-14 11:16:43,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:43,120 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 57 treesize of output 11 [2022-12-14 11:16:43,152 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 11:16:43,158 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 11:16:43,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:16:43,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:43,189 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 23 treesize of output 22 [2022-12-14 11:16:43,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:16:43,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:43,211 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 23 treesize of output 22 [2022-12-14 11:16:43,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:16:43,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:43,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:43,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:43,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:43,266 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:16:43,267 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 1 case distinctions, treesize of input 34 treesize of output 25 [2022-12-14 11:16:43,281 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:43,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:43,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:43,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:43,287 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:16:43,287 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 1 case distinctions, treesize of input 34 treesize of output 25 [2022-12-14 11:16:43,352 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 11:16:43,356 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 11:16:43,363 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 11:16:43,464 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 11:16:43,470 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 11:16:43,482 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 11:16:43,606 INFO L321 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2022-12-14 11:16:43,606 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 28 treesize of output 45 [2022-12-14 11:16:43,627 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-14 11:16:43,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 38 [2022-12-14 11:16:43,638 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:16:45,941 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3286#(and (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 5) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (or (not (<= (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~ptr~0#1.base|))) (not (<= 0 |ULTIMATE.start_main_~ptr~0#1.offset|))) (<= |ULTIMATE.start_main_~head~1#1.offset| 0) (= |ULTIMATE.start_main_~data_init~0#1| 1) (<= 0 |ULTIMATE.start_main_~head~1#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 5) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= 5 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:16:45,941 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:16:45,941 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:16:45,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 15] total 38 [2022-12-14 11:16:45,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650326823] [2022-12-14 11:16:45,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:16:45,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-14 11:16:45,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:16:45,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-14 11:16:45,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=2596, Unknown=2, NotChecked=0, Total=2862 [2022-12-14 11:16:45,944 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand has 39 states, 38 states have (on average 2.4473684210526314) internal successors, (93), 39 states have internal predecessors, (93), 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 11:16:47,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:16:47,140 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2022-12-14 11:16:47,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 11:16:47,140 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.4473684210526314) internal successors, (93), 39 states have internal predecessors, (93), 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 34 [2022-12-14 11:16:47,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:16:47,141 INFO L225 Difference]: With dead ends: 92 [2022-12-14 11:16:47,141 INFO L226 Difference]: Without dead ends: 92 [2022-12-14 11:16:47,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1411 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=634, Invalid=4056, Unknown=2, NotChecked=0, Total=4692 [2022-12-14 11:16:47,142 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 631 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 11:16:47,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 176 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 11:16:47,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-12-14 11:16:47,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 65. [2022-12-14 11:16:47,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 64 states have internal predecessors, (70), 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 11:16:47,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2022-12-14 11:16:47,143 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 34 [2022-12-14 11:16:47,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:16:47,143 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2022-12-14 11:16:47,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.4473684210526314) internal successors, (93), 39 states have internal predecessors, (93), 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 11:16:47,144 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2022-12-14 11:16:47,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 11:16:47,144 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:16:47,144 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:16:47,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 11:16:47,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 11:16:47,346 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-14 11:16:47,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:16:47,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1031121686, now seen corresponding path program 1 times [2022-12-14 11:16:47,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:16:47,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947091623] [2022-12-14 11:16:47,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:47,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:16:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:48,988 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:16:48,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:16:48,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947091623] [2022-12-14 11:16:48,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947091623] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:16:48,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997055117] [2022-12-14 11:16:48,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:16:48,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:16:48,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:16:48,989 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:16:48,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68b49599-a8d8-496a-9779-3cb1cb1de8d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 11:16:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:16:49,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 100 conjunts are in the unsatisfiable core [2022-12-14 11:16:49,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:16:49,212 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:16:49,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-12-14 11:16:49,302 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-12-14 11:16:49,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 33 [2022-12-14 11:16:49,374 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 11:16:49,420 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 14 treesize of output 16 [2022-12-14 11:16:49,484 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-14 11:16:49,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-12-14 11:16:49,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:16:49,548 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 14 treesize of output 16 [2022-12-14 11:16:49,558 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 13 treesize of output 9 [2022-12-14 11:16:49,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:49,612 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 21 treesize of output 20 [2022-12-14 11:16:49,616 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 14 treesize of output 16 [2022-12-14 11:16:49,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:49,622 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 21 treesize of output 20 [2022-12-14 11:16:49,647 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:16:49,647 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 88 [2022-12-14 11:16:49,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:49,655 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 51 treesize of output 44 [2022-12-14 11:16:49,661 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 41 treesize of output 41 [2022-12-14 11:16:49,732 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 51 treesize of output 38 [2022-12-14 11:16:49,737 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 26 treesize of output 28 [2022-12-14 11:16:49,740 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 40 treesize of output 33 [2022-12-14 11:16:49,829 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:16:49,829 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 71 [2022-12-14 11:16:49,835 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 34 treesize of output 36 [2022-12-14 11:16:49,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:49,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 51 [2022-12-14 11:16:49,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:49,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:49,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-14 11:16:49,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:16:49,969 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:16:49,969 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 50 [2022-12-14 11:16:49,980 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 18 treesize of output 20 [2022-12-14 11:16:50,041 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:50,048 INFO L321 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-12-14 11:16:50,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 39 [2022-12-14 11:16:50,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:16:50,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2022-12-14 11:16:50,115 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 11:16:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:16:50,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:16:53,152 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:16:53,152 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 125 treesize of output 118 [2022-12-14 11:16:53,174 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:16:53,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1132 treesize of output 1128 [2022-12-14 11:16:53,194 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:16:53,195 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 1163 treesize of output 843 [2022-12-14 11:16:53,210 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 928 treesize of output 900 [2022-12-14 11:16:53,239 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:16:53,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 8405 treesize of output 8173 [2022-12-14 11:16:53,305 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 9121 treesize of output 8781 [2022-12-14 11:16:53,448 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 3050 treesize of output 2938 [2022-12-14 11:16:53,687 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 6181 treesize of output 6049