./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/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_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ddeff00ba0e288e2e7b04a6005a0db991f8cee358fe3ef021af7107ab321b8e --- 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 12:02:11,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:02:11,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:02:11,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:02:11,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:02:11,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:02:11,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:02:11,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:02:11,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:02:11,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:02:11,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:02:11,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:02:11,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:02:11,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:02:11,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:02:11,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:02:11,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:02:11,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:02:11,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:02:11,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:02:11,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:02:11,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:02:11,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:02:11,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:02:11,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:02:11,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:02:11,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:02:11,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:02:11,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:02:11,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:02:11,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:02:11,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:02:11,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:02:11,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:02:11,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:02:11,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:02:11,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:02:11,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:02:11,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:02:11,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:02:11,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:02:11,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 12:02:11,093 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:02:11,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:02:11,094 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:02:11,094 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:02:11,095 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:02:11,095 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:02:11,095 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:02:11,095 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:02:11,095 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:02:11,095 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:02:11,096 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:02:11,096 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:02:11,096 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:02:11,096 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:02:11,096 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:02:11,097 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:02:11,097 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:02:11,097 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:02:11,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:02:11,098 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:02:11,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:02:11,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:02:11,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:02:11,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:02:11,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:02:11,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:02:11,099 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:02:11,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:02:11,099 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:02:11,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:02:11,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:02:11,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:02:11,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:02:11,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:02:11,100 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:02:11,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:02:11,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:02:11,100 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:02:11,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:02:11,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:02:11,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:02:11,101 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_c82ac856-9715-4634-905e-06d7968f72c2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ddeff00ba0e288e2e7b04a6005a0db991f8cee358fe3ef021af7107ab321b8e [2022-12-14 12:02:11,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:02:11,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:02:11,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:02:11,318 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:02:11,318 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:02:11,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i [2022-12-14 12:02:13,834 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:02:14,080 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:02:14,080 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i [2022-12-14 12:02:14,093 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/data/17bde25ad/d408d51c30654da0bee49f5707c50073/FLAG0d7c23dd3 [2022-12-14 12:02:14,106 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/data/17bde25ad/d408d51c30654da0bee49f5707c50073 [2022-12-14 12:02:14,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:02:14,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:02:14,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:02:14,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:02:14,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:02:14,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:02:14" (1/1) ... [2022-12-14 12:02:14,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f6f4632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:02:14, skipping insertion in model container [2022-12-14 12:02:14,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:02:14" (1/1) ... [2022-12-14 12:02:14,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:02:14,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:02:14,472 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_c82ac856-9715-4634-905e-06d7968f72c2/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i[33021,33034] [2022-12-14 12:02:14,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:02:14,572 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:02:14,591 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_c82ac856-9715-4634-905e-06d7968f72c2/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i[33021,33034] [2022-12-14 12:02:14,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:02:14,662 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:02:14,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:02:14 WrapperNode [2022-12-14 12:02:14,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:02:14,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:02:14,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:02:14,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:02:14,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:02:14" (1/1) ... [2022-12-14 12:02:14,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:02:14" (1/1) ... [2022-12-14 12:02:14,729 INFO L138 Inliner]: procedures = 177, calls = 349, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1145 [2022-12-14 12:02:14,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:02:14,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:02:14,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:02:14,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:02:14,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:02:14" (1/1) ... [2022-12-14 12:02:14,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:02:14" (1/1) ... [2022-12-14 12:02:14,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:02:14" (1/1) ... [2022-12-14 12:02:14,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:02:14" (1/1) ... [2022-12-14 12:02:14,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:02:14" (1/1) ... [2022-12-14 12:02:14,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:02:14" (1/1) ... [2022-12-14 12:02:14,784 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:02:14" (1/1) ... [2022-12-14 12:02:14,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:02:14" (1/1) ... [2022-12-14 12:02:14,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:02:14,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:02:14,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:02:14,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:02:14,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:02:14" (1/1) ... [2022-12-14 12:02:14,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:02:14,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:02:14,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:02:14,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:02:14,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 12:02:14,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 12:02:14,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 12:02:14,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 12:02:14,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 12:02:14,865 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 12:02:14,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 12:02:14,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:02:14,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 12:02:14,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 12:02:14,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 12:02:14,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 12:02:14,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:02:14,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:02:14,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:02:15,010 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:02:15,011 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:02:16,488 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:02:16,790 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:02:16,790 INFO L300 CfgBuilder]: Removed 60 assume(true) statements. [2022-12-14 12:02:16,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:02:16 BoogieIcfgContainer [2022-12-14 12:02:16,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:02:16,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:02:16,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:02:16,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:02:16,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:02:14" (1/3) ... [2022-12-14 12:02:16,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7602de0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:02:16, skipping insertion in model container [2022-12-14 12:02:16,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:02:14" (2/3) ... [2022-12-14 12:02:16,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7602de0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:02:16, skipping insertion in model container [2022-12-14 12:02:16,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:02:16" (3/3) ... [2022-12-14 12:02:16,799 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test4-1.i [2022-12-14 12:02:16,814 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:02:16,814 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 12:02:16,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:02:16,862 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@24f291fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:02:16,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 12:02:16,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 107 states have (on average 1.794392523364486) internal successors, (192), 118 states have internal predecessors, (192), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-14 12:02:16,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 12:02:16,872 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:02:16,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:02:16,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:02:16,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:02:16,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1318725013, now seen corresponding path program 1 times [2022-12-14 12:02:16,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:02:16,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140174478] [2022-12-14 12:02:16,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:02:16,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:02:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:02:17,047 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 12:02:17,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:02:17,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140174478] [2022-12-14 12:02:17,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140174478] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:02:17,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:02:17,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:02:17,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751862077] [2022-12-14 12:02:17,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:02:17,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:02:17,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:02:17,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:02:17,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:02:17,085 INFO L87 Difference]: Start difference. First operand has 127 states, 107 states have (on average 1.794392523364486) internal successors, (192), 118 states have internal predecessors, (192), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:02:18,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 12:02:21,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 12:02:22,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 12:02:22,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:02:22,524 INFO L93 Difference]: Finished difference Result 347 states and 628 transitions. [2022-12-14 12:02:22,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:02:22,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 12:02:22,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:02:22,540 INFO L225 Difference]: With dead ends: 347 [2022-12-14 12:02:22,540 INFO L226 Difference]: Without dead ends: 220 [2022-12-14 12:02:22,542 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 12:02:22,544 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 97 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-12-14 12:02:22,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 310 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-12-14 12:02:22,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-12-14 12:02:22,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 127. [2022-12-14 12:02:22,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 108 states have (on average 1.212962962962963) internal successors, (131), 118 states have internal predecessors, (131), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-14 12:02:22,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 163 transitions. [2022-12-14 12:02:22,586 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 163 transitions. Word has length 8 [2022-12-14 12:02:22,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:02:22,586 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 163 transitions. [2022-12-14 12:02:22,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:02:22,587 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 163 transitions. [2022-12-14 12:02:22,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 12:02:22,588 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:02:22,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:02:22,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:02:22,589 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:02:22,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:02:22,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1742694732, now seen corresponding path program 1 times [2022-12-14 12:02:22,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:02:22,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946904556] [2022-12-14 12:02:22,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:02:22,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:02:22,798 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 12:02:22,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100576474] [2022-12-14 12:02:22,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:02:22,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:02:22,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:02:22,799 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:02:22,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 12:02:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:02:23,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 3056 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:02:23,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:02:23,765 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 12:02:23,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:02:23,850 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 12:02:23,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:02:23,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946904556] [2022-12-14 12:02:23,851 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 12:02:23,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100576474] [2022-12-14 12:02:23,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100576474] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:02:23,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1726918376] [2022-12-14 12:02:23,866 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-12-14 12:02:23,867 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:02:23,869 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:02:23,873 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:02:23,874 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:02:24,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,011 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 22 treesize of output 7 [2022-12-14 12:02:24,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:02:24,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,036 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 12:02:24,037 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 1 case distinctions, treesize of input 33 treesize of output 43 [2022-12-14 12:02:24,075 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 12:02:24,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-12-14 12:02:24,089 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 12:02:24,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 12:02:24,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 12:02:24,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-12-14 12:02:24,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9075036 treesize of output 5376290 [2022-12-14 12:02:24,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 12:02:24,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:02:24,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,542 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 12:02:24,543 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 1 case distinctions, treesize of input 33 treesize of output 43 [2022-12-14 12:02:24,574 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 12:02:24,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-12-14 12:02:24,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,591 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 22 treesize of output 7 [2022-12-14 12:02:24,624 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 12:02:24,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-12-14 12:02:24,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:24,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 12:02:24,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 12:02:25,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-12-14 12:02:25,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:25,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9896988 treesize of output 5376290 [2022-12-14 12:02:25,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 12:02:25,140 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:02:37,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1726918376] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:02:37,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 12:02:37,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3] total 11 [2022-12-14 12:02:37,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241194164] [2022-12-14 12:02:37,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:02:37,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 12:02:37,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:02:37,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 12:02:37,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=69, Unknown=2, NotChecked=0, Total=132 [2022-12-14 12:02:37,855 INFO L87 Difference]: Start difference. First operand 127 states and 163 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:02:40,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 12:02:42,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 12:02:44,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 12:02:48,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:02:48,088 INFO L93 Difference]: Finished difference Result 265 states and 340 transitions. [2022-12-14 12:02:48,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 12:02:48,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-12-14 12:02:48,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:02:48,090 INFO L225 Difference]: With dead ends: 265 [2022-12-14 12:02:48,091 INFO L226 Difference]: Without dead ends: 140 [2022-12-14 12:02:48,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=71, Invalid=83, Unknown=2, NotChecked=0, Total=156 [2022-12-14 12:02:48,092 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 1 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-12-14 12:02:48,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 466 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 215 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2022-12-14 12:02:48,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-12-14 12:02:48,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 137. [2022-12-14 12:02:48,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 118 states have (on average 1.194915254237288) internal successors, (141), 128 states have internal predecessors, (141), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-14 12:02:48,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 173 transitions. [2022-12-14 12:02:48,103 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 173 transitions. Word has length 52 [2022-12-14 12:02:48,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:02:48,103 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 173 transitions. [2022-12-14 12:02:48,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:02:48,104 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 173 transitions. [2022-12-14 12:02:48,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 12:02:48,105 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:02:48,105 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:02:48,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:02:48,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-14 12:02:48,307 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:02:48,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:02:48,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1270953821, now seen corresponding path program 1 times [2022-12-14 12:02:48,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:02:48,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519589238] [2022-12-14 12:02:48,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:02:48,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:02:48,456 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 12:02:48,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024256845] [2022-12-14 12:02:48,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:02:48,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:02:48,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:02:48,458 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:02:48,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 12:02:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:02:49,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 2193 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:02:49,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:02:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 12:02:49,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:02:49,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 12:02:49,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:02:49,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519589238] [2022-12-14 12:02:49,286 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 12:02:49,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024256845] [2022-12-14 12:02:49,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024256845] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:02:49,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1751852887] [2022-12-14 12:02:49,290 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-12-14 12:02:49,290 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:02:49,291 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:02:49,291 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:02:49,291 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:02:49,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,367 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 22 treesize of output 7 [2022-12-14 12:02:49,396 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 12:02:49,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-12-14 12:02:49,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 12:02:49,414 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 12:02:49,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,423 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:02:49,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2022-12-14 12:02:49,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 12:02:49,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-12-14 12:02:49,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9075036 treesize of output 5376290 [2022-12-14 12:02:49,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 12:02:49,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 12:02:49,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 12:02:49,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:49,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 12:02:49,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 12:02:49,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 12:02:49,978 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-12-14 12:02:49,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 77 [2022-12-14 12:02:49,993 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 28 treesize of output 36 [2022-12-14 12:02:50,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 12:02:50,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 12:02:50,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,248 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 22 treesize of output 7 [2022-12-14 12:02:50,275 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 12:02:50,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-12-14 12:02:50,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 12:02:50,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:02:50,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2022-12-14 12:02:50,302 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 12:02:50,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 12:02:50,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 12:02:50,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-12-14 12:02:50,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9075036 treesize of output 5376290 [2022-12-14 12:02:50,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 12:02:50,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 12:02:50,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 12:02:50,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 12:02:50,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 12:02:50,903 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-12-14 12:02:50,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 77 [2022-12-14 12:02:50,916 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 28 treesize of output 36 [2022-12-14 12:02:50,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:02:50,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 12:02:50,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 12:02:51,189 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 241 for LOIs [2022-12-14 12:02:51,258 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:03:04,447 WARN L233 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 239 DAG size of output: 228 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:03:14,925 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 250 DAG size of output: 240 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:03:26,773 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 272 DAG size of output: 254 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:03:39,398 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 272 DAG size of output: 254 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:03:39,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1751852887] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:03:39,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 12:03:39,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4, 4] total 17 [2022-12-14 12:03:39,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477623213] [2022-12-14 12:03:39,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:03:39,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 12:03:39,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:03:39,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 12:03:39,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=172, Unknown=9, NotChecked=0, Total=272 [2022-12-14 12:03:39,985 INFO L87 Difference]: Start difference. First operand 137 states and 173 transitions. Second operand has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 11 states have internal predecessors, (58), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 12:03:42,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 12:03:44,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 12:03:46,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 12:03:48,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 12:03:50,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 12:03:52,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 12:03:54,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 12:03:56,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 12:03:58,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 12:04:06,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:04:06,260 INFO L93 Difference]: Finished difference Result 267 states and 342 transitions. [2022-12-14 12:04:06,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 12:04:06,261 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 11 states have internal predecessors, (58), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 65 [2022-12-14 12:04:06,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:04:06,262 INFO L225 Difference]: With dead ends: 267 [2022-12-14 12:04:06,262 INFO L226 Difference]: Without dead ends: 142 [2022-12-14 12:04:06,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 48.7s TimeCoverageRelationStatistics Valid=91, Invalid=172, Unknown=9, NotChecked=0, Total=272 [2022-12-14 12:04:06,264 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 0 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:04:06,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 641 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 391 Invalid, 9 Unknown, 0 Unchecked, 26.2s Time] [2022-12-14 12:04:06,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-12-14 12:04:06,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2022-12-14 12:04:06,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 122 states have (on average 1.1885245901639345) internal successors, (145), 132 states have internal predecessors, (145), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (17), 7 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-14 12:04:06,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 179 transitions. [2022-12-14 12:04:06,279 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 179 transitions. Word has length 65 [2022-12-14 12:04:06,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:04:06,279 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 179 transitions. [2022-12-14 12:04:06,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 11 states have internal predecessors, (58), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 12:04:06,279 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 179 transitions. [2022-12-14 12:04:06,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 12:04:06,280 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:04:06,280 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:04:06,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 12:04:06,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:04:06,482 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:04:06,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:04:06,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1298103213, now seen corresponding path program 1 times [2022-12-14 12:04:06,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:04:06,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038939036] [2022-12-14 12:04:06,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:04:06,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:04:06,632 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 12:04:06,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661338995] [2022-12-14 12:04:06,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:04:06,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:04:06,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:04:06,634 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:04:06,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82ac856-9715-4634-905e-06d7968f72c2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 12:04:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:04:07,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 2208 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:04:07,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:04:07,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 12:04:07,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:04:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 12:04:07,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:04:07,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038939036] [2022-12-14 12:04:07,474 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 12:04:07,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661338995] [2022-12-14 12:04:07,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661338995] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:04:07,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1876056328] [2022-12-14 12:04:07,478 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-12-14 12:04:07,478 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:04:07,478 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:04:07,478 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:04:07,478 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:04:07,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:04:07,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,543 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 12:04:07,543 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 1 case distinctions, treesize of input 33 treesize of output 43 [2022-12-14 12:04:07,574 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 12:04:07,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-12-14 12:04:07,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 12:04:07,592 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 12:04:07,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 12:04:07,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 12:04:07,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-12-14 12:04:07,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9075036 treesize of output 5376290 [2022-12-14 12:04:07,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 12:04:07,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 12:04:07,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 12:04:07,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 12:04:07,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 12:04:07,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 12:04:07,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:07,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 12:04:08,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 12:04:08,080 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-12-14 12:04:08,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 66 [2022-12-14 12:04:08,127 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-12-14 12:04:08,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 77 [2022-12-14 12:04:08,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 12:04:08,229 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 14 treesize of output 10 [2022-12-14 12:04:08,234 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 14 treesize of output 10 [2022-12-14 12:04:08,250 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 64 treesize of output 63 [2022-12-14 12:04:08,258 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 64 treesize of output 63 [2022-12-14 12:04:08,264 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 66 treesize of output 65 [2022-12-14 12:04:08,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 12:04:08,287 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 14 treesize of output 10 [2022-12-14 12:04:08,293 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 14 treesize of output 10 [2022-12-14 12:04:08,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075032 treesize of output 5376218 [2022-12-14 12:04:08,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 42 [2022-12-14 12:04:08,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2022-12-14 12:04:08,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:04:08,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075032 treesize of output 5376218 [2022-12-14 12:04:08,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 42 [2022-12-14 12:04:08,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2022-12-14 12:04:09,079 INFO L217 Elim1Store]: Index analysis took 368 ms [2022-12-14 12:04:11,262 INFO L321 Elim1Store]: treesize reduction 96, result has 17.9 percent of original size [2022-12-14 12:04:11,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 10752670 treesize of output 10752673 [2022-12-14 12:04:12,000 INFO L217 Elim1Store]: Index analysis took 665 ms [2022-12-14 12:04:13,817 INFO L321 Elim1Store]: treesize reduction 144, result has 12.7 percent of original size [2022-12-14 12:04:13,818 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 15 case distinctions, treesize of input 10752675 treesize of output 10752677 [2022-12-14 12:04:21,477 WARN L233 SmtUtils]: Spent 7.62s on a formula simplification. DAG size of input: 67 DAG size of output: 32 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 12:04:21,478 INFO L321 Elim1Store]: treesize reduction 340, result has 16.0 percent of original size [2022-12-14 12:04:21,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 1986 treesize of output 1481 [2022-12-14 12:04:21,644 INFO L217 Elim1Store]: Index analysis took 118 ms [2022-12-14 12:04:37,848 WARN L233 SmtUtils]: Spent 16.20s on a formula simplification. DAG size of input: 90 DAG size of output: 45 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 12:04:37,848 INFO L321 Elim1Store]: treesize reduction 266, result has 31.6 percent of original size [2022-12-14 12:04:37,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 2005 treesize of output 1829 [2022-12-14 12:04:38,428 INFO L217 Elim1Store]: Index analysis took 447 ms [2022-12-14 12:04:52,782 WARN L233 SmtUtils]: Spent 13.99s on a formula simplification. DAG size of input: 249 DAG size of output: 147 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 12:04:52,783 INFO L321 Elim1Store]: treesize reduction 2466, result has 32.0 percent of original size [2022-12-14 12:04:52,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 1606 treesize of output 2097 [2022-12-14 12:04:53,891 INFO L321 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-12-14 12:04:53,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 91 treesize of output 73 [2022-12-14 12:04:53,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 12:04:54,219 INFO L217 Elim1Store]: Index analysis took 157 ms [2022-12-14 12:04:55,069 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 12:04:55,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 70 treesize of output 94 [2022-12-14 12:04:58,643 INFO L217 Elim1Store]: Index analysis took 520 ms